I showed this in another thread using the sellers photos. However when I got it today and shot my own photos I noticed it looked a lot greener than sellers photos did. I can say that everywhere the green is, it looks to be silver underneath. Most of the coin still has a very thin silver coating. Like most of it has worn off. Is this corrosion or something else? Thanks...Mont.
It's hard for me to say for sure what it might be but one possibility you might want to look at (and hopefully rule out) would be bronze disease. Does the green stuff feel powdery and flake off with a toothbrush or fingernail? If so it might have bronze disease and you will need to treat it and keep it away from your other bronzes. It could also just be natural patina made to look more prominent in certain lights. Hopeful some people more knowledgeable in recognizing which is which will chime in. @TIF posted some great resources a while back on bronze disease recognition and treatment that I will repost here for your reference. http://www.crescentcitycoinclub.org/seminars_and_programs/Bronze Disease.pdf http://www.accla.org/actaaccla/bronzediseasetherapy.html http://www.bitsofhistory.com/info/bronze_disease.html http://www.collector-antiquities.co...estoring-and-conservation/bronze-disease.html http://www.forumancientcoins.com/numiswiki/view.asp?key=Bronze Disease Also, great coin and it's nice to see you posting on this side of the forum @MontCollector! Welcome
Thank you @Curtisimo!! I forgot to mention the coin is smooth to the touch as well. It doesn't feel crusty like an old diseased bronze cent.
That's a good sign then and you might just have some colorful natural patina on your hands. I actually rather like the colorful patinas you sometimes find on ancient bronze coins (green, red, orange etc.). I think it gives the coins a nice character.
This coin is like that. When you hold it just right in the light she appears to have some slight rainbow toning to it. Especially where the bronze shows through on the bust.
i think that patina is purdy!.. doesn't look to me like BD... and ole "Sal" don't look too bad either..she must have got a rhinoplasty after i got her.. same coin.
