Here is a New Old Stock vintage Gruen watch Gruen 510 SS (sweep seconds) movement fourth wheel NOS Gruen part #18 - an original authentic Gruen packaged vintage watch. Supply this Gruen 510 movement part to your watchmaker and save.Hard-to-find vintage Gruen watch treasure that came out of an old watchmaker's estate - he specialized in Gruen in the 1940s, 50s and 60s, and stocked mostly the Gruen Swiss Made parts. Each week we list several rare Gruen Swiss Made watch cases and dials in the Gruen section of  EBAY store Squinky so have a look. We have other Gruen vintage part auctions including dealer's kit Gruen NOS watches to assemble just as the dealer's did in the 1950s, 60s and 70s. Watch our weekly auctions for more Gruen vintage items such as dials crowns used Gruen movements and other parts. Bid with confidence with the Squinky Vintage Watch Shop: Check our feedback of 17,000 positives and history with EBAY since 1998.