That's a result!
However, I personally won't go anywhere near olive oil - it gets into the metal and then, being organic, start to degrade inside the coin. It can destroy bronze coins and while I'm not 100% sure about silver I simply wouldn't take the chance (though if anyone knows differently, then it'd be great to hear). The lemon juice (acid) was what did the heavy lifting on your coin and rendered a remarkable transformation. Well done
Have a play with zappage - it can work wonders and, if used cautiously, can get swift and satisfying results.
Oxgirl wrote: ↑Mon Mar 08, 2021 5:49 pm
I wonder how many roman coins are thought to be bronzes when they are really silver?

Love the transformation
Got one of them somewhere. I'll see if I can dig out the pics