kszucs Posted December 17, 2021 Report Share Posted December 17, 2021 Hey all !!! I got a really nice Bentley big date 6.75 rep years ago from Toro. I am not quite sure which movement is in it.. I thought A7750 … but I am second guessing myself now. The watch stopped working a while back and I have slowly been getting the courage to fix it. So I took it apart and the escape wheel pivot is broken. I ordered an eta 7750 escape wheel .. but .. the new one has 20 teeth, Old one is a 15 tooth escape wheel. anyone able to help me figure out which escape wheel to order ? Link to comment Share on other sites More sharing options...
ceejay Posted December 28, 2021 Report Share Posted December 28, 2021 You have a older 21,000 vph movement based on the Valjoux 7750. The newer ETA 7750 has a beat rate of 28,000vph this will explain the different tooth count. This is the wheel you require (or similar) https://www.ebay.co.uk/itm/264294191948 Part number is Valjoux 705 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now