C. Two-body, polished, screwed-down case back, concave lugs. D. Guilloche silver with printed radial Arabic numerals on a plain reserve, subsidiary dials for the seconds, the 30-minute and 12- hour registers. Steel dauphine hands. M. Cal. 72, rhodium-plated, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, blued steel flat balance spring. Dial, case and movement signed. Diam. 35 mm. Thickness 14 mm.