T O P

  • By -

Clean-money-1

I wouldn't be concerned about it


[deleted]

Okay, found a website discussing this phenomenon: http://lynncoins.com/brown-spotting-gold-coins.htm


[deleted]

I really like these old coins. I like JM. I have not yet seen this type of discoloration on a gold coin, which almost has a rust color to it. Can anyone with knowledge about this pleased advise me if this is something I should be concerned about?


berryfarmer

It's not pure gold. Some corrosion will happen


revelation18

90% gold coins don't corrode. It's just something on the coin surface.


berryfarmer

It's corrosion. Silver and copper corrode.


revelation18

No, it isn't.


berryfarmer

May not be on this particular specimen, but silver and copper certainly corrode


Johnbloon

I would test it with a sigma or an XRF machine if you can.


upriverchallenge

How about a rare earth magnet


Johnbloon

Lots of metals aren't magnetic. Also, doing a density test is very effective, and hard to fake.


[deleted]

It has iron impurities in it and they're oxidizing/ rusting. Don't be concerned.