RARE Vintage 1960s Benrus 17 Jewels Ladies Watch | Cocktail 。A mechanical model from the 1940s or 1950s, featuring a distinctive fancy-lug case and a metal link or stretch bracelet. Benrus was a prominent American watch company known for using Swiss movements and unique case designs. Brand: Benrus, an American watchmaking company founded in New York City in 1921 by the Lazrus brothers. Era: This style, characterized by its small, ornate case and integrated bracelet, is typical of post-WWII designs from the 1940s and 1950s, a period when Benrus produced many popular ladies\' cocktail watches. Case serial number on the back case: 427501 10k RGP rolled bezel