Swiss stainless steel centre seconds military watch Circa 1955

Centre seconds military watch with a 24-hour dial by Breguet
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A chrome cased Swiss keyless open faced pocket watch with a black 24-hour dial and centre seconds, circa 1955.
Nickel plated movement, calibre 19, straight-line lever escapement with cut bimetallic balance, blued steel Breguet balance spring, hack feature. Black enamel patinated dial, Arabic numerals, 24-hour indication, the outer ring calibrated for minutes, centre seconds, and original hands.  Inscription on the dial T.U for (temps universel). Polished case, milled bezels, engraved screw down back. Case and dial signed. Accompanied by an original fitted deck box numbered 0083A with a glazed aperture on the cover.
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Diameter: 50 mm
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Signed: Breguet T.U.