Breitling "Premier", ref. 777 made in 1940's.
Fine stainless steel gentleman's wristwatch with round button chronograph, register and tachometer.
Case: massive, polished, satined, screwed back, waterproof.
Dial: mat silver with radiumed Arabic numerals + auxiliary seconds and 45 minutes register dials, outer tachometer graduation. "BÃ¢ton" radiumed hands.
Movement: 13- rhodiumed, 17 jewels, lever escapement, monometallic balance, antishock system, self-compensating Breguet balance-spring.