Bueche-Girod 9960

Bueche Girod, $20 coin watch. Pink gold / yellow gold 750. D 34 mm. Reference No.: 9960 Case No.: 54068, three-part case with pressed back, incorporated in a $20 gold coin from 1904 Dial: Gold with line indices Movement: Ultra-thin hand-wound caliber with screw balance and 17 jewels Accessories: None It is a horological and goldsmithing feat to incorporate a watch, complete with its own case and glass, into a coin. By pressing a hidden button in the edge of the coin, the front side of the coin opens to reveal the dial. The entire watch can then also be unfolded from the case.