18 K gold, engine-turned, engraved and chased caseband, pendant and bow, case maker's punch mark "TH (Thomas Hardy)".

18 K gold, two-tone, frosted, auxiliary seconds with engine-turned centre, applied Roman pink gold numerals.

Full plate movement, keywind, chain/fusee, bimetallic chronometer balance with 2 screws and 2 segmental weights, freesprung blued helical balance spring.