Very useful Gruen Curvex 440 curved 17 jewels movement restoration parts for one of the original 1940s models. The balance staff swings freely but the movement isn't running. Winding through acting as if it needs a mainspring/repair. Includes a winding stem and a worn crown. Otherwise, the movement is untested. The pictures serve as a key part of the description here. Keep in mind we show 2.5X magnified macro pictures, which exaggerate tiny details.

Another scarce vintage piece from the Squinky vintage Gruen parts treasure trove. We are in the process of listing exclusively Gruen Curvex parts, dials, cases, movements and complete Curvex watches needing repair. Message us if you need certain Curvex items.

Also see our Gruen 510 new old stock dials and a 510 cases in both yellow gold-filled and chrome.

Squinky stocks hundreds of rare Gruen parts including many used Gruen Curvex watch movements, movement parts, dials and other pieces.

Nearly each week we list several rare Gruen old stock dials in the Gruen section of the EBAY store Squinky, so have a look. Check out the Squinky store for signed Gruen yellow and white gold crowns in many styles, and many other  spare parts for vintage Gruen watches mostly NOS items from the 1940s, 50s and 60s. 

The Squinky vintage watch shop is also one of the largest sellers of vintage watch movement repair parts on EBAY with 2000+ parts listed and 100+ repair guides here for all of the major old watch brands that collectors like.

Go with a seller with more than 18,000 positive feedbacks on EBAY since 1998 and a member of the NAWCC watch collector's association since 1997.