A 20th Century Swiss lever in an unusual gilt and enamel roulette game case. Nickelled three quarter plate 17 jewel keyless movement with going barrel. Plain cock with shockproof jewelling, plain three arm balance with spiral hairspring. Club foot lever escapement. Signed gilt dial with the suits of playing cards at the quarters, black hands. Unusual gilt metal case in the form of a roulette wheel, the outer section with alternate red and black numerals and a single green zero, rotating freely. The game can be played by holding the centre with the watch between thumb and finger while running the edge of the wheel along a surface, the numeral indicated by a small arrow. The back cover printed “Casanova Club” .