Looks to me like verdigris or some such material is forming. As the chemical forms, the copper of the coin is consumed.
Welcome to CoinTalk. Looks like someone punched the reverse with something...can we see it please
The peso isn't silver https://en.numista.com/catalogue/pieces1105.html Welcome to CT
Wish it was, but think it is more brass.
[MEDIA]
When I first saw it, I thought it was a scratch, but it really is raised.
...thought I had heard that before...a few hundred times
@Shrews1994 ignore the negative postings here and concentrate on the encouraging ones. Did you do INCREDIBLY well, no, but you did OK. I will...
Thanks Paddy, I took it out of the 2x2 and prodded it with a toothpick and it didn't move, I'm stumped by it. Don't know if @Pickin and Grinin...
But I insist 436 angels can dance on the head of a pin...
@Fred Weinberg @paddyman98 could use your expertise here...please
Gee...you should have said that before.:)
Welcome to CT. Prices on coins will move up when there is demand. Demand would be stimulated by an increase in coin collectors who WANT the coin...
2
It can be destructive of the surface, and even if not, residue left can cause unsightly toning if not thoroughly rinsed.
I sincerely find it hard to believe any household cleaner would do that.
Gotta agree with Doug here to separate cleaning and harsh cleaning. Cleaning would be rinsing/soaking with any pure solvent or dipping in coin...
I was talking with a friend who is a dealer (small time) and he asked me about a couple of coins as to what was going on... What is this, small...
"Who doesn't enjoy a little mystery?"
[IMG]
Separate names with a comma.
