Gruen Quadron Model 82 green gold filled
Gruen Quadron inscribed 157/8 on inside back. Green gold filled case. Best guess is Model 82 variant: Crystal is “sandwiched” between bezel and bezel insert underneath. A later Quadon no doubt, following the more streamline look versus Art Deco. 22mm x 37mm to lug tips, 16mm lug width, green gold-filled case with filigree border, inner sandwiched crystal with mounted bracket, black leather strap, silvered dial with black painted numerals, 15J caliber 157 Quadron movement. Movement winds and set properly. Keeps time to within 2 min/day, but not known when last serviced.