Compax Chronograph" Girard-Perregaux

"Compax Chronograph" Girard-Perregaux, "Compax Chronograph", Ref. 22209. Made in the 1950s. Fine, water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers and tachometer. Three-body, polished, concave lugs, screwed-down case back. Matte silver with radium-coated Arabicnumerals, subsidiary dials for the seconds, the 12-hour and 30-minute registers, outer blue tachometer graduationand 1/5th seconds scale. Radium-coated blued steel "lozenge" hands. Cal. 281, rhodium-plated, 17 jewels,straight line lever escapement, monometallic balance, self-compensating Breguet balance-spring.Dial, case and movement signed.Diam. 33 mm. Thickness: 13 mm.