Vintage Gruen Rectangular Men's Mechanical Wristwatch 168 Swiss 10k RGP & ChromeProduct Description Item: Wristwatch Brand: Gruen Model: Rectangular Movement: Mechanical Case Material: 10k RGP & Chrome Country: Swiss Jewels: 17 Jewel Gender: Men's Caliber: 168 Size: 18mm About the brand: Founded in Ohio Gruen was one of the largest American watch manufacturers for the greater part of the 20th century. In fact, shortly after their relocation to Cincinnati, Gruen became the number one selling watch brand in the US. Like many brands