Case. Four-body, solid, demi-bassine, polished, hinged gold cuvette engraved with Grand Prix and various Longines Grand Prix award medals.Dial. White enamel with painted Arabic numerals, outer minutes track, sunk subsidiary seconds dial. Blued steel Breguet hands.Movement . frosted gilt, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator. Dial, case and movement signed.Diam: 54 mmDial, case and movement in good condition.