Ref. 1188. Made in the 1950s.

Fine, stainless steel wristwatch with square button chronograph, register and tachometer.
Case: three-body, solid, polished, curved lugs, snap- on case back.
Dial: greenish taupe with applied pink gold Arabic numerals and dart indexes, subsidiary dials for the constant seconds and the 30-minute registers, outer 1/5th seconds track with 5-second Arabic markers and tachometer scale. Pink gold baton hands.
Movement: cal. 188, rhodium-plated, 17 jewels, straight- line lever escapement, bimetallic compensation balance, flat balance spring.
Dial, case and movement signed.
Diam: 37 mm. Thickness: 11 mm.