C. two-body, polished, screw down case back and crown, curved straight lugs. D. black with radium-coated Arabicnumerals and indexes. 'Bâton' radium-coated hands. M. Cal. 9''', rhodium plated, 17 jewels, lever escapement,Superbalance balance, 2 adjustments, self-compensating Breguet balance spring.Dial, case, and movement signed. Diam. 24 mm.