An early 20th Century Swiss buttonhole lapel watch in a gold case. Gilt keyless bar movement with going barrel. Plain cock with polished steel regulator, plain three arm gilt balance with blue steel spiral hairspring. Polished steel cylinder, steel escape wheel. Small white enamel dial with gilt minute markings and black Arabic numerals, the number twelve in red, blue steel hands. Gold 9 carat case, the movement housed in the larger section worn behind the lapel. The narrow neck of the case houses the cannon pinion and supports the dial set under a glazed bezel.