marked Rockford Screw Products Co
It definitely shows that other companies had a lot of respect for the quality of Hamilton watches
even for dive watch standards
Pictured in René Rondeau's book "The Watch Of The Future" on page 176
with half minute markers
Gruen Curvex Executive 14K White Gold Diamond Dial Watch SHOP FOR_Clocks marked Rockford Screw Products CoOffered is this circa 1945 14K White Gold Diamond Dial Gruen Curvex Executive watch that winds, sets, and runs great. It keeps excellent time. It is signed on the case, dial, and movement, and was the first Curvex to have diamonds on the dial from the factory. BRAND: Gruen Curvex Executive GENDER: Mens CASE: 14K White Gold CASE BACK: Snap on, Curved, marked Gruen, WBO 14K, 356284, and inside marked Cased & Timed in USA, by the Gruen Watch Co., 14K WBO