hand made cuff button with makers mark???

[button king]

I'm hopeing someone can id this stamp on the back its hard to see but I think it's rxov or rxor Thanks for looking!

 

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[Breezie]

Perhaps you could clean it and take a clearer photo. I really can't tell from the pic, but it looks like Avon or Ayon.

Neat find
Breezie

 

[CRUSADER]

With just the makers mark & no other hallmarks it will be near impossible to ID this 18th C Cufflink. Unless you know a silver 18th C specialist.