A mystery clock by Jean Eugène Robert-Houdin (December 6, 1805 – June 13, 1871) clock maker, inventor and magician. Glass dial with a single hand and Roman numerals. Ormolu and original glass dome.
Paris, circa 1848.
Literature: Derek Roberts, “Mystery, Novelty & Fantasy Clocks”, 1999, p. 228, pl. 19-12, A & B, illustrating a similar mystery clock from Robert-Houdin’s Fourth Series.