Looking for a clean, rust-free 431 to scavenge for parts. The few I have seen on eBay are rather sad looking...
I've got a very clean caliber 431 - but it's inside a pink 18k C-case Ultra-Chron at the moment. You could always buy that from me. That would end any need for parts for the other watch.
Considering how often you probably wear that 'chron, how about we just swap movements - my dead one for your working one? You'll never notice the difference! I get to keep the chronometer-signed rotor, however