This is a rare circa 1966 Favre Leuba Bathy 50m depth-gauge watch. The case displays excellent overall condition. The blue turning checkerboard bezel displays amazing overall condition. The original blue dial with white and red accents has some fading from age and paint chipping (often seen on these) on the inner white bezel. This is a professionally designed tool watch – the first of its kind able to register diving depths accurately up to 50m. The manual winding movement is keeping time after a recent cleaning. There is an original screw-down winding crown and sapphire crystal. Favre Leuba is one of the world’s oldest watch companies – since 1718.