Swiss chronometer brass with 54 hour power reserve Circa 1940

Brass marine chronometer with 54h power reserve by Zenith
–
A fine Swiss, mahogany, bezel set, two day going marine chronometer with 54 hour power reserve indicator, circa 1940. Brass bowl and gimballed suspension. Matte silver dial with painted Arabic numerals, an outer minute hour ring with 24 hour graduation, subsidiary seconds and up and down indication. Blued steel alpha hands. A gilt brass movement, 3/4 plate with cylindrical pillars secured by screws, Geneva striping decoration, 19 jewels, straight line lever escapement, two arm monometallic balance with screws, self compensating Breguet balance spring with terminal curves.
Dial, case and movement signed.
–
Diameter: 90 mm
–
Dimensions box: 15 × 15 × 11 cm
–
Signed: Chronometre Zenith Le Locle