Robert-Houdin Triple Mystery Clock. Paris: Att. Jean Eugene Robert-Houdin, ca. 1850. A “Series 4” or “Triple” Mystery Clock by the famous “father of modern magic.” Time is kept by two arrow-shaped hands attached to a clear glass dial. The dial and bezel rest on a tall clear glass tube. This delicate and attractive arrangement itself rests atop four griffin-like beasts with curved tails, which elevate the clock from the ormolu-decorated platform, providing the third of three mysteries in the working of the timepiece. Viewers are left to guess at how the hands turn and keep time when the dial is made of clear glass, the handsome engraved bezel is supported only by glass tubes, and the tubes themselves are separated from the base. Even so, the clock would keep time and chime at intervals when wound, as if it were an ordinary timepiece. Clock 18 ½ x 7 ¾ x 6”; bezel and dial diameter 5”; base 11 ½ x 3 ¾ x 7 ¾”. Beveled glass dial finely lettered with the name “Robert-Houdin / Paris” and Roman numerals. With key. Generally good condition, with slight looseness of the central column and wear to dial. Close examination by an expert horologist recommended. Detailed condition report available on request.