Swiss brass marine watch with 36-hour power reserve Circa 1945

Brass marine watch by Longines
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A Swiss brass keyless lever marine chronometer watch, circa 1945. With a 36-hour power reserve indication. A gimballed and weighted brass case threaded glazed bezel with a reeded edge. Glazed cover over the movement. Matte silver dial, radial Arabic hour numerals, outer minute track, subsidiary seconds dial at 6 o’clock with Arabic 10-second numerals, power reserve indication below 12 and blued steel spade hands.
A rhodium-plated movement, 17 jewels, straight-line lever escapement, cut bimetallic compensation balance adjusted to three positions, blued steel Breguet balance spring, and a patented cam-type micrometre regulator. Dial and movement signed.
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Diameter: 91 mm
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Signed: Longines  Swiss
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Mahogany deck box included.