Any thoughts on this 105.012-66 listed on eBay? Appears to be some sort of gunk on the top left. Any Idea what that could be, and if it could be resolved with a service?

https://www.ebay.com/itm/vintage-om...-Movement-Caliber-321-With-Paper/253989662111Purchases made through these links may earn this site a commission from the eBay Partner Network

Thanks!

 

Considering the price, I wouldn't consider any further.

 

Looks like a lot of rust/corrosion in the keyless works and in the chrono works. If I were you, I'd avoid it.

 

Okay, then it is settled. Thank you...

 

Not to mention the seller is handling it without wearing rubbers on his fingers...