A mid 20th century Swiss mahogany two day marine chronometer, Ulysse Nardin, Locle, No. 6650 the frosted gilt movement with diamond end stone to a helical hairspring terminating in an Earnshaw type spring detent escapement, maintaining power, chain fusee, signed Roman dial with subsidiaries for state of wind and running seconds, in a two-part brass-bound mahogany box with twin side handles with a protective outer padded carrying case. Height 19 cm