An early 20th Century American lever in an engine turned gold full hunter case. Small gilt three quarter plate keyless seven jewel movement with going barrel. Engraved cock with polished steel regulator, compensation balance with blue steel overcoil hairspring. Club foot lever escapement. Signed white enamel dial, subsidiary seconds, Roman numerals, blue steel hands. Small engine turned 14 carat full hunter case, vacant shield shaped cartouche within a garter on the front cover. Plain gold cuvette, ribbed middle, maker's mark “Keystone”.