American marine chronometer with 24 hour dial Circa 1950

Aluminium marine chronometer in box
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An unusual and rare American, two day going marine chronometer with 24 hour dial, circa 1950. Movement by Thomas Mercer, 56 hour power reserve sector and half second/10 second electrical impulse for regulating slave timepieces. Ebonized hardwood and bakelite with aluminium corners, aluminium bowl, held in place by black foam. Silvered dial, outer track graduated for minutes and 24 hours, aperture at 6 0’clock to view the seconds wheel and electrical contacts, up and down indicator at o’clock 12. Blued Spade hands.

A brass full plate movement, 13 jewels, ring turned pillars secured by screws, fusee and chain, Harrison’s maintaining power, Earnshaw spring detent escapement, cut bimetallic compensation balance with two circular mean time weights and two temperature nuts, free sprung helical balance spring with outer terminal curves.
Dial, case and movement signed and numbered.
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Dimensions box: 21 × 21 × 15 cm
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Signed: Low Max Inc.  New York