BREITLING REF. 797 CHRONOGRAPH PINK GOLD Breitling, "Chronograph," case No. 589871, Ref. 797. Made in the 1940s. Very fine and rare, 18K pink gold wristwatch with square button chronograph, register and tachometer. Two-body, solid, polished, claw lugs, stepped bezel, dedicated snap-on case back. Matte silver with painted black Arabic numerals, subsidiary dials for the seconds and the 45 minute register, outer 1/5th second track and tachometer scale. Blued steel fancy hands. Cal. 13''', rhodium plated, 17 jewels, straightline lever escapement, monometallic balance, self-compensating steel Breguet balance spring, index regulator.