![Gruen Précision "Chrono-Timer", No. 792663, case No. 140933. Produced in the 1950's.Water-resistant stainless steel mid-sized wristwatch, with single button chronograph, register, tacho-meterand telemeter. | Important Watches, Collector's Wristwatches ... Gruen Précision "Chrono-Timer", No. 792663, case No. 140933. Produced in the 1950's.Water-resistant stainless steel mid-sized wristwatch, with single button chronograph, register, tacho-meterand telemeter. | Important Watches, Collector's Wristwatches ...](https://antiquorum-swiss-assets.s3.us-west-2.amazonaws.com/images/17/lots/258/258.jpg)
Gruen Précision "Chrono-Timer", No. 792663, case No. 140933. Produced in the 1950's.Water-resistant stainless steel mid-sized wristwatch, with single button chronograph, register, tacho-meterand telemeter. | Important Watches, Collector's Wristwatches ...
![Sold at Auction: Gruen Watch Co., Switzerland, Precision Chrono- Timer, Patented Very-Thin, Wristwatch with 1-pusher switch wheel chronograph "Monopusher", pulsation scale and tachymeter scales Sold at Auction: Gruen Watch Co., Switzerland, Precision Chrono- Timer, Patented Very-Thin, Wristwatch with 1-pusher switch wheel chronograph "Monopusher", pulsation scale and tachymeter scales](https://image.invaluable.com/housePhotos/Kloter/78/727378/H21511-L295131356.jpg)