Help conserve my Cherrypick

Hi everyone,
I was lucky enough to pick this up at a local pawn shop for $20, and apparently its a pretty valuable Key date. The only issue I had with this was the splotchy brown stuff (residue?) on the rev. Any suggestion on how to conserve this coin?
Thanks in advance!

 

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If it is actually residue, then acetone is what you should use. Perfectly safe for silver coins. We are having a discussion about it here, on the Coin Chat forum: https://www.cointalk.com/threads/is-acetone-really-the-trick.322411/

 

I'll try that... is it residue and not just ugly toning?

 

Put it in a 2x2. Don't do any cleaning or dipping.

 

It is hard to tell from the pictures. If it is ugly toning, the acetone won't affect it - and in that case, just leave it alone. If it is residue, the acetone will remove it.

 

Thanks for all the replies guys. I'll leave it as is. Just happy to be able to make one of my better purchases

 

I was astounded that, despite cleaning discussion, not one mentioned anything about the coin's representation. It is 50 ore, 1888. Oscar II of Sweden succeeded his brother, as King, in 1872 until 1907, of the Union between Sweden and Norway. He, as is the present King of Sweden, is of the Bernadotte line. The obverse states -
"Oscar II, Norway's and Sweden's King - The Welfare of the Brother Peoples."

 

Can't tell from the photos if that is toning or due to residue, however, I would absolutely soak it in acetone. If it's residue or if there is any PVC present, it will remove it. If it's natural toning it will be left alone. It won't harm the coin - there is really no reason not to do this. Worst case scenario nothing changes.

 

Just a heads up, surface feels a little bit sticky when touched...

 

Yup, give that puppy a pure acetone bath.

 

Don't do it, you'll regret it later.

 

Don't do what? Do you think acetone will damage it in any way? It is STICKY

 

Please explain why he will regret soaking it in acetone.

 

To soak in acetone or not to soak in acetone ? That is the numismatics great question.

 

I don't see any benefits in doing that. Best case scenario he'd end up with a dull white coin.

I would just leave it as is in an envelope. But again, it's not my coin so please proceed as you'd like and post results here in case you dip it.

 

Acetone doesn't affect toning. It only removes (many) organic compounds that have adhered to the coin. Some of these, such as the plasticizer decomposition residue from PVC flips will damage the coin if not removed. There is a chance that toning/surfaces under the residue may be different than the rest of the coin depending on the amount of time the residue was in place, or if the residue caused damage. Acetone WILL NOT turn the coin dull white, unless that was the original surface under the tape residue.