Omega plated watches should be gold over stainless so what could explain the green grunge all over this one? It is obviously in awful condition otherwise but this is a curious condition.

 

forgot the reference.
https://www.ebay.com/itm/401630396209?ul_noapp=truePurchases made through these links may earn this site a commission from the eBay Partner Network

 

14ct gold contains a lot of copper. If the watch has been immersed in water, it will oxidise. I would ask for a movement photo before bidding, or bid low to avoid a loss if I received a movement rusted together.

 

The gold is plated over brass. Brass has copper which corrodes.

 

4 days left to run and you post a link on a watch forum, that just doubled the price of said watch
( black dial is worth a gamble to more than a few here )

 

As soon as I saw the title of the thread, I was pretty certain it was the black dial on eBay. As soon as I saw the link, I literally said “shit” out loud.