This is a 1950's Gruen Veri-Thin Gents Dress Watch, the tonneau shaped case has hidden lugs and is good condition. The case is Yellow Gold Plated with a steel back, the are scratches on both but nothing major, the dial shows very little sign of wear, there is a crack in the glass we suggest a replacement. 
Inside the case is a Swiss made 435 17 Jewel Lever movement signed Verithin. Gruen Watch Co.
Cosmetically overall in good condition and runs well.