A Fine Album Signed By Wangxuetao - Jul 05, 2022 | Treasure Art International Auction Co. Ltd In Co
Upcoming AuctionsAuctions Near MeHow Auctions Work
|
HelpNewsConsignPrice Results
LiveAuctioneers Logo
Art
Jewelry
Asian Antiques
Furniture
Collectibles
Coins
Home & Décor
Fashion
Explore Categories

Art
Artists
Popular Searches
Browse by Origin
DALSHIRE INAUGURAL PLATINUM ART AUCTION
Dalshire International
Sponsored.Your ad here?

Jewelry
Featured
Popular Searches
Jewelry & Watches
John Moran Auctioneers, Inc.
Sponsored.Your ad here?

Asian Antiques
Browse By Origin
Featured
The Southeast Asian Bronze Buddha Auction
The Buddha Gallery
Sponsored.Your ad here?

Furniture
Tables
Seating
Cabinets & Storage
Browse By Styles
Featured
Ararity's Antique & Decorative Arts Auction 2
Ararity Auctions
Sponsored.Your ad here?

Collectibles
Militaria, Memorabilia, Collectibles, More..
Eagles Corps International LLC
Sponsored.Your ad here?

Coins
Browse By Origin
Featured Coins
LATE NIGHT! Key Date Rare Coin Auction 20.1ON
Key Date Coins
Sponsored.Your ad here?

Home & Décor
Featured
Ararity's Antique & Decorative Arts Auction 2
Ararity Auctions
Sponsored.Your ad here?

Clothing
Accessories
Featured Designers

lots of lots
View Auction
Jewelry
Bracelets
Beaded Bracelets
Zhang Daqian Beaded Bracelets
Previous
Lot 0095
Next

A fine album signed by Wangxuetao

Zhang Daqian Sale History

View Price Results for Zhang Daqian
Sold
FRAGRANCE CHENXIANG PRAYER BEADS BRACELET: Measurements: Width: 2 cm, Weight: 70 cm Chinese Chenxiang Fragrance Agarwood Carved Prayer Beads Bracelet . Hand carved ChenXiang fragrance Chenxiang Fragrance Agarwood Chinese prayer-bead bracelet.
2024FRAGRANCE CHENXIANG PRAYER BEADS BRACELETSee Sold Price
Sold
Chinese Apple Green Jade Beaded 14K Bracelet: Chinese Apple Green Jade Beaded 14K Bracelet. Marked. Approximately measures and weighs 9", 29 grams. In good condition. All Items Are Third party shipping or free local pick-up within 60 days of end
2023Chinese Apple Green Jade Beaded 14K BraceletSee Sold Price
Sold
A giant Chinese landscape painting scroll signed by Shilu: Core size 360x140cm
2022A giant Chinese landscape painting scroll signed by ShiluSee Sold Price
Sold
The mirror core of Chinese landscape painting signed by Guan Shanyue: Core size 136x65cm
2022The mirror core of Chinese landscape painting signed by Guan ShanyueSee Sold Price
Sold
The mirror core of Chinese landscape painting signed by weizixi: Core size 178x96cm
2022The mirror core of Chinese landscape painting signed by weizixiSee Sold Price
Sold
Qigong signed Chinese Calligraphy: Core size 134x31cm
2022Qigong signed Chinese CalligraphySee Sold Price
Sold
Chinese landscape painting signed by chenshaomei: Core size 95x50cm
2022Chinese landscape painting signed by chenshaomeiSee Sold Price
Sold
Mirror core of Chinese landscape painting signed by LiuHaisu: Core size 136x65cm
2022Mirror core of Chinese landscape painting signed by LiuHaisuSee Sold Price
Sold
Giant Chinese figure painting mirror core signed by shiguoliang: Core size 214x135cm
2022Giant Chinese figure painting mirror core signed by shiguoliangSee Sold Price
Sold
The giant Chinese painting figure mirror core signed by liuwenxi, a masterpiece: Core size 222x220cm
2022The giant Chinese painting figure mirror core signed by liuwenxi, a masterpieceSee Sold Price
Sold
Chinese painting mirror core signed by Ren Zhong: Core size 139x65cm
2022Chinese painting mirror core signed by Ren ZhongSee Sold Price
Sold
A giant Chinese landscape painting mirror core signed by Zhang Bu: Core size 360x140cm
2022A giant Chinese landscape painting mirror core signed by Zhang BuSee Sold Price
Sold
The painting axis of the giant Chinese Buddha signed by Zhangdaqian: Core size 247x138cm
2022The painting axis of the giant Chinese Buddha signed by ZhangdaqianSee Sold Price
Sold
Silk scroll of Chinese painting signed by Leng Mei: Core size 130x42cm
2022Silk scroll of Chinese painting signed by Leng MeiSee Sold Price
Sold
Chinese calligraphy signed by Qian Juntao: Core size 68x45cm
2022Chinese calligraphy signed by Qian JuntaoSee Sold Price
Sold
Giant Chinese landscape painting scroll signed by liuwenxi: Core size 245x122cm
2022Giant Chinese landscape painting scroll signed by liuwenxiSee Sold Price

Related Beaded Bracelets

Fine Quality Natural Tiger Eye Beaded Bracelet: Fine Quality Natural Tiger Eye Beaded BraceletShipping Rate: $23.00 .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combine shipping on multiple items purch
22 hrs LeftFine Quality Natural Tiger Eye Beaded Bracelet
$20
Womens Vintage Estate Sterling Silver Beaded Bracelet: A WOMENS VINTAGE ESTATE STERLING SILVER FINE BEADED BRACELET. BRACELET IS 7 1/2" LONG BY 1/8" WIDE, AND WEIGHS 2.6g. THIS WOULD MAKE A LOVELY GIFT. ANY QUESTIONS PLEASE ASK. BE SURE TO CHECK OUT SOME
Jun 13, 2024Womens Vintage Estate Sterling Silver Beaded Bracelet
$30
Vintage square jade and silver beads bracelet, 28 gr.: Vintage square jade and silver beads bracelet, 28 gr. Silver sterling 925 clasp, signed by maker in Hebrew: Ravid Length:18 cm. (7 inches) width: 8 x 8 mm. (0.3 x 0.3 inches)
May 29, 2024Vintage square jade and silver beads bracelet, 28 gr.
$25
Sterling Silver & Glass Beaded Bracelet: Sterling Silver beaded bracelet with square colorless glass panels. Measures approx. 2.25 inches wide. Some surface wear including scratching and chips observed. Estate jewelry, fine jewelry, cocktail
Jun 05, 2024Sterling Silver & Glass Beaded Bracelet
$10
Vtg Miriam Haskell Faux Pearl Beaded Bracelet: Vintage Miriam Haskell gold tone faux pearl beaded bracelet. Signed on clasp. Measures approx. 7 inches long. Some scratching observed. Estate jewelry, costume jewelry, cocktail jewelry, fashion jewel
Jun 05, 2024Vtg Miriam Haskell Faux Pearl Beaded Bracelet
$20
Vintage Silver & Coppery Gold Seed Beaded Bracelet, 7", 1990's: Vintage Silver & Coppery Gold Seed Beaded Bracelet, 7", 1990's. The beads are multi-strand and twisted with silver tone seed beads and a clear outer with a coppery gold tone center bead that is twiste
14 hrs LeftVintage Silver & Coppery Gold Seed Beaded Bracelet, 7", 1990's
$20
Vintage Caged Crackle Beaded Bracelet, 1950's-1960's, Germany, 7.25": Vintage Caged Crackle Beaded Bracelet, 1950's-1960's, Germany, 7.25". The chain is appx. 5.5mm wide, curb link, silver tone. There are five caged crackled beads in an appx. 15.5mm round orb. Clear; or
14 hrs LeftVintage Caged Crackle Beaded Bracelet, 1950's-1960's, Germany, 7.25"
$25
Amethyst Barrel Bead Bracelet: Title: Amethyst Barrel Bead Bracelet Description: This is a mesmerizing Amethyst Barrel Bead Bracelet. Each bead is meticulously handcrafted, The barrel-shaped beads feature precisely cut facets that
May 29, 2024Amethyst Barrel Bead Bracelet
$35
14k Gold Green Gemstone Beaded Bracelet: Vintage 14k gold chain bracelet with green gemstone beaded decoration. Marked 14k on clasp. Measures approx. 7.5 inches long. Total weight 15.2 grams. Some surface wear including scratching observed.
Jun 05, 202414k Gold Green Gemstone Beaded Bracelet
$50
Elegant Myanmar Jadeite Burma Jade Bracelet Beaded: Materials: Burma (Myanmar) jade. Condition: Flawless preservation condition. This bracelet is elegantly crafted from Myanmar jade, known for its exceptional quality and beauty. The bracelet features a
Jun 07, 2024Elegant Myanmar Jadeite Burma Jade Bracelet Beaded
$60
Galaxy Tiger Eye Beads Bracelets: Title: Galaxy Tiger Eye Beads Bracelets Description: Gorgeous blue purple multi color Galaxy tiger eye bead This bracelet is made with 10mm galaxy tiger eye with Gorgeous blue purple multi Galaxy colo
16 hrs LeftGalaxy Tiger Eye Beads Bracelets
$35
6.5mm Akoya pearls pearls bead bracelet 14kt: 6.5 mm Akoya pearls bracelet. Three stranded and bar linked. 20mm wide. 14 karat yellow gold 7.5 in Long Comfortable stud beaded clasp Reserve: $1,600.00 Shipping: Domestic: Free shipping to anywhere
19 hrs Left6.5mm Akoya pearls pearls bead bracelet 14kt
$1,400
Natural Rare Green Red Ghost Phantom Crystal Beaded Bracelet 10mm: Title: Natural Rare Green Red Ghost Phantom Crystal Beaded Bracelet 10mm Description: This Bracelet is made with 10mm Green Phantom Quartz beads with Stretch Elastic. Size: length of approximately 18c
May 29, 2024Natural Rare Green Red Ghost Phantom Crystal Beaded Bracelet 10mm
$60
Vintage Square Cut Amethyst Beads Bracelet: Title: Vintage Square Cut Amethyst Beads Bracelet Description: Square-Cut Amethyst Bead Bracelet, a radiant masterpiece that pairs the elegance of square-cut amethyst beads with dazzling diamond facet
May 29, 2024Vintage Square Cut Amethyst Beads Bracelet
$70
14kt Alternated bull bead bracelet hollow 9.5 inch 4.8mm: Alternated ball bead bracelet. Hollow balls. Balls: 4.8 & 2.8mm Chain 6.2mm caliber 14 karat yellow gold 2.7 g Bracelet measure 9.5-in Secure lock Reserve: $280.00 Shipping: Domestic: Free shipping to
May 29, 202414kt Alternated bull bead bracelet hollow 9.5 inch 4.8mm
$240
A HETIAN WHITE JADE BEADED BRACELET.: Hetian White Jade Beaded Bracelet.
Jun 01, 2024A HETIAN WHITE JADE BEADED BRACELET.
$1,200

More Items from Zhang Daqian

View More
LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN: LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN 59.5×43.5cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a st
Live NowLANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN
$100
SIGNED ZHANG DAQIAN(1899-1983).A INK AND COLOR ON PAPER HANGING SCROLL PAINTING. H743.: SIGNED ZHANG DAQIAN(1899-1983).A INK AND COLOR ON PAPER HANGING SCROLL PAINTING. H743.China.HANGING PAINTING.C Property from a Chinese Collection. Our consignor bought the item from Japan Tokyo Auctio
3 days LeftSIGNED ZHANG DAQIAN(1899-1983).A INK AND COLOR ON PAPER HANGING SCROLL PAINTING. H743.
$950
LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN: LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN 69.5×33.5cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a st
Live NowLANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN
$100
ATTRIBUTED AND SIGNED ZHANG DAQIAN (1899-1983). A INK AND COLOR ON PAPER HANGING PAINTING. H696: ATTRIBUTED AND SIGNED ZHANG DAQIAN (1899-1983). A INK AND COLOR ON PAPER HANGING PAINTING. H696.China. Depicting Chinese landscape scenery, with four red color seals of artist.C Property from a Privat
3 days LeftATTRIBUTED AND SIGNED ZHANG DAQIAN (1899-1983). A INK AND COLOR ON PAPER HANGING PAINTING. H696
$47,500
LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN: LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN 28×23.5cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a stat
Live NowLANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN
$100
ZHANG DAQIAN, LANDSCAPE PAINTING ON PAPER, MOUNTED: ZHANG DAQIAN, LANDSCAPE PAINTING ON PAPER, MOUNTED 27x64cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a statement of fact. A
5 days LeftZHANG DAQIAN, LANDSCAPE PAINTING ON PAPER, MOUNTED
$200
LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN: LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN 95x46cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a stateme
Live NowLANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN
$100
A CHINESE PAINTING OF BLUE AND GREEN LANDSCAPE SIGNED ZHANG DAQIAN: A CHINESE PAINTING OF BLUE AND GREEN LANDSCAPE SIGNED ZHANG DAQIAN Painting depicting blue and green landscape, hand scroll, mounted, ink and color on paper, inscribed and signed Zhang Daqian, seals o
Jun 02, 2024A CHINESE PAINTING OF BLUE AND GREEN LANDSCAPE SIGNED ZHANG DAQIAN
$1,000
ZHANG DAQIAN, LANDSCAPE PAINTING ON PAPER, HANGING SCROLL: ZHANG DAQIAN, LANDSCAPE PAINTING ON PAPER, HANGING SCROLL 171×94.5cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a statement
5 days LeftZHANG DAQIAN, LANDSCAPE PAINTING ON PAPER, HANGING SCROLL
$300
BUDDHA, INK AND COLOR ON SILK, HANGING SCROLL, ZHANG DAQIAN: BUDDHA, INK AND COLOR ON SILK, HANGING SCROLL, ZHANG DAQIAN 103x97cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a statement
Live NowBUDDHA, INK AND COLOR ON SILK, HANGING SCROLL, ZHANG DAQIAN
$100
AVALOKITESVARA, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN: AVALOKITESVARA, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN 128x60cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a s
Live NowAVALOKITESVARA, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN
$100
LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN: LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN 40×29cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a statem
Live NowLANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN
$100
LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN: LANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN 79×35cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a statem
Live NowLANDSCAPE, INK AND COLOR ON PAPER, HANGING SCROLL, ZHANG DAQIAN
$100
A BODHISATTVA PAINTING BY ZHANG DAQIAN.张大千: Bodhisattva Painting on Silk, Hand Painted by Zhang Daqian.张大千
3 days LeftA BODHISATTVA PAINTING BY ZHANG DAQIAN.张大千
$100
HUANG YONGYU (ATTRIBUTE TO, 1924-2023): 26 3/4 in. × 53 17/32 in. (68 × 136 cm)
3 days LeftHUANG YONGYU (ATTRIBUTE TO, 1924-2023)
£750
LANDSCAPE, INK AND COLOR ON PAPER, MOUNTED AND FRAME, ZHANG DAQIAN: LANDSCAPE, INK AND COLOR ON PAPER, MOUNTED AND FRAME, ZHANG DAQIAN 35x23cm Condition: Any condition statement is given as a courtesy to a client, is only an opinion and should not be treated as a stat
Live NowLANDSCAPE, INK AND COLOR ON PAPER, MOUNTED AND FRAME, ZHANG DAQIAN
$100

Recommended Bracelets

View More
18K White Gold bangle bracelet with diamonds: 18K White Gold bracelet with 1ct VS1 twt diamonds with screwdriver. Engraved 750 on inside. The size is 17 centimeters (6.7 ")
3 days Left18K White Gold bangle bracelet with diamonds
$1,750
Tiffany & Co 18K Gold Elsa Diamond by the Yard Necklace: Tiffany & Co 18K Gold Elsa Diamond by the Yard Necklace. Crafted from 18K yellow gold featuring a single .14 carat brilliant cut diamond set in a bezel setting and centered on a non removable 16 inch
5 days LeftTiffany & Co 18K Gold Elsa Diamond by the Yard Necklace
$700
18k Gold 2.0 CTTW Diamond Hinged Bangle Bracelet: A classic 18k yellow gold love screw style bangle bracelet with diamonds. Features a hinged design set with round brilliant-cut diamonds along the top half of the bracelet. Finished with a secure box-
6 days Left18k Gold 2.0 CTTW Diamond Hinged Bangle Bracelet
$650
Martinez Navajo Sterling Silver Turquoise Bracelet: Signed R. Martinez sterling silver and turquoise cuff bracelet. Embossed raised surface. Signed to interior. Tests for sterling using PuriTEST kit. Piece has weight. Total weight 91.7 grams. Measures
Jun 05, 2024Martinez Navajo Sterling Silver Turquoise Bracelet
$150
CARTIER JUSTE UN CLOU BANGLE: Brand: CartierMaterial: Pink gold (18K) Stone: No Stone Width: 3.5cm - 1.43mm / 1.37'' - 0.05'' Weight: 35.3g / 1.24oz. Accessories: Box, Case
2 days LeftCARTIER JUSTE UN CLOU BANGLE
$1,100
Walter Schluep (1931-2016) Canadian, Modernist Sterling Silver and Gold Bangle Ring: Sterling Silver and Gold Bangle Ring, signed inside (Monogram of the Artist) Ster Schluep Size : 9 Weight: 8,7 g
7 days LeftWalter Schluep (1931-2016) Canadian, Modernist Sterling Silver and Gold Bangle Ring
CA$110
18k Gold 1.75 CTTW Diamond Hinged Bangle Bracelet: Fine 18k yellow gold love screw style bangle bracelet with diamonds. Features a hinged design with round brilliant-cut diamonds set in the top half of the bangle. Finished with a secure box-style clas
6 days Left18k Gold 1.75 CTTW Diamond Hinged Bangle Bracelet
$400
14k Gold Charm Bracelet w/ 22k Gold US Coins 161gr: A vintage yellow gold coin charm bracelet showcases 90% gold U.S. coins, including (1) $20 gold Liberty Double Eagle, (2) $10 Gold Liberty Eagles, and (4) $5 gold Liberty Half Eagles. Each coin is set
6 days Left14k Gold Charm Bracelet w/ 22k Gold US Coins 161gr
$2,500
Designer 18k Gold and 16ct Diamond Cuff Bracelet: DESCRIPTION: A designer 18k white gold cuff bracelet crafted by (7) tennis diamond inset bangles. Each bangle inset with a series of .07 ct round cut diamonds amounting to approx. 16 cts total. Stampe
1 day LeftDesigner 18k Gold and 16ct Diamond Cuff Bracelet
$3,500
Large Vintage whiting Davis mesh bag silver with chain handle: Large Vintage whiting Davis mesh bag silver with chain handle Length 8 inch Width 4 inch
4 days LeftLarge Vintage whiting Davis mesh bag silver with chain handle
$75
14K Gold Carved Nugget Link Bracelet.: 14K gold carved nugget 20 link bracelet. Length of the bracelet is 7"long and 4 mm wide and weighs 10.66 grams.
May 29, 202414K Gold Carved Nugget Link Bracelet.
$150
Diamond Bangle Bracelet 18Kt.: 18Kt White Gold Diamond Bangle Bracelet. Bracelet has 24 Princess Cut Diamonds. Diamonds weight approx: 1.50ctw-2.00ctw. Total weight: 11.00 Grams.
4 days LeftDiamond Bangle Bracelet 18Kt.
$275
14k Gold 12 CTTW Princess Diamond Tennis Bracelet: A fine 14k white gold princess-cut diamond tennis line bracelet. Features a series of prong-set princess-cut diamonds set in white gold. Finished with a secure box clasp with safety link. Marked 14k.
6 days Left14k Gold 12 CTTW Princess Diamond Tennis Bracelet
$300
Richard C. Jim Gem Grade Bisbee Turquoise Detailed Intricate Inner & Outer Stamp Work Heavy Gauge: Sterling Silver | Genuine Bisbee Turquoise | Richard C. Jim Gem Grade Bisbee Turquoise Detailed Intricate Inner & Outer Stamp Work Heavy Gauge Cuff Bracelet | Navajo Native American Southwest Indian J
Jun 02, 2024Richard C. Jim Gem Grade Bisbee Turquoise Detailed Intricate Inner & Outer Stamp Work Heavy Gauge
$650
Cartier Vintage 18K Yellow Gold Twist Bangle Bracelet: Cartier Vintage 18K Yellow Gold Twist Bangle Bracelet - This lovely vintage Cartier bangle is crafted in 18k yellow gold and has a hinged design with a textured, twist design. Hallmarks: Cartier, 750.
3 days LeftCartier Vintage 18K Yellow Gold Twist Bangle Bracelet
$600
Konyak Naga Pair of Woman's Engraved Bracelets: Antique pair of hand forged brass coiled bracelets with engraved designs, collected in North Eastern India, Konyak peoples, Nagaland, in the early 1990's. The Pair measure 9 inches.
3 days LeftKonyak Naga Pair of Woman's Engraved Bracelets
$50
item-131213684=1
item-131213684=2
item-131213684=3
item-131213684=4
item-131213684=5
item-131213684=6
item-131213684=7
item-131213684=8
item-131213684=9
A fine album signed by Wangxuetao
A fine album signed by Wangxuetao
Item Details
Description
Album size 80x40cmx12
Condition
Complete appearance
Buyer's Premium
  • 15%

A fine album signed by Wangxuetao

Estimate $5,000 - $8,000
See Sold Price
Starting Price $800
Sell a Similar Item
Shipping & Pickup Options
Item located in Boulder, CO, us
See Policy for Shipping
Local Pickup Available
Payment
TREASURE ART INTERNATIONAL AUCTION CO. LTD

TREASURE ART INTERNATIONAL AUCTION CO. LTD

Boulder, CO, United States10 Followers

Related Searches

Qing Dynasty Jewelry
Meiji Jewelry
Showa Jewelry
Zhang Daqian Jewelry
Boxwood Jewelry
Brass Jewelry
Asian Jewelry
Ming Dynasty Jewelry
Agate Jewelry
Beadwork Jewelry
Zhang Daqian Price Guide
Price Results
Auctions in Colorado
TOP