A 20th Century American lever in a silver full hunter case. Gilt split three quarter plate keyless movement with going barrel. Engraved cock with polished steel micrometer regulator, compensation balance with blue steel overcoil hairspring. Screwed in jewelling, club foot lever escapement. Signed white enamel dial with subsidiary seconds, Arabic numerals, blue steel hands. Plain silver full hunter Dennison case. Silver cuvette, maker's mark “ALD” in a rectangle.