An early 20th Century Swiss lever in an unusual hexagonal gold case. Slim keyless nickelled bar movement with going barrel. Plain cock with polished steel micrometer regulator. Compensation balance with blue steel overcoil hairspring. Club foot lever escapement, screwed in jewelling. Silvered dial with subsidiary seconds, Roman numerals, blue steel hands. Unusual plain 18 carat hexagonal open face case with clip on back and bezel.