Movado. A rare and unusual stainless steel openface keyless lever deck watch with power reserve and regulator dial

Movado. A rare and unusual stainless steel openface keyless lever deck watch with power reserve and regulator dial
Signed Movado, Chronomètre/Chronometer, Breveté/Patent 104595, movement no. 340'073, case no. 340'109, circa 1930
Cal. 350 19''' nickel-finished lever movement, 21 jewels, bimetallic compensation balance, hinged cuvette, silvered regulator dial, small meantime dial with Roman numerals, outer Arabic and railway seconds indication, sweep centre seconds, 36 hours power reserve, large circular water-resistant-type case, screw bezel and back, large ball-shaped crown, case, cuvette, dial and movement signed
80 mm. diam.