C. 1950. From American watchmakers Gruen, this glamorous Retro-era timepiece hails from our Estate collection sparkling with 2.00 ct. t.w. r… C. 1950. From American watchmakers Gruen, this glamorous Retro-era timepiece hails from our Estate collection sparkling with 2.00 ct. t.w. round diamonds. Features include hand-wound mechanical movement, glass crystal, 14mm 14kt white gold case, white dial, safety chain and foldover clasp. Exclusive, one-of-a-kind Estate Jewelry.