how would you conserve these proof coins?
Kccoin
Posts: 1,086 ✭✭✭✭✭
These two coins are pretty solid aside from the "stuff" . Does anyone have any advice on how to properly remove the gunk without damaging the coin surface? I have no experience dealing with copper or nickel.
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If that is PVC damage then you might have pretty damaging etching underneath the green.
In honor of the memory of Cpl. Michael E. Thompson
Start with pure acetone (not the nail polish remover - the good stuff)...let it soak (covered, because acetone evaporates fast) for a few hours, then swish it around... do NOT rub it. Put new acetone in the dish and let it soak some more. Then take a Qtip and roll it gently where any remaining gunk is...not rub, roll. It should come off.... let us know what happens. Cheers, RickO
And rinse in distilled water.
I would second what's already been written.
But it is likely terminal, especially in a proof. You are always going to see the spots even if you can remove the gunk.
The crime is over but the evidence cannot be erased. Having said that getting the PVC off now is the best thing to do.
My Collection of Old Holders
Never a slave to one plastic brand will I ever be.
I agree with acetone. I would also consider MS70 on the nickel.
Look like the dreaded PVC, alright.
Do the soak and the Q-tip gentle roll like ricko said...and pray.
Here's a warning parable for coin collectors...
Ouch. Acetone will take off the PVC, but I'd be astonished if it hasn't destroyed the mirrors underneath.
thanks for the comments. I think they will spend the weekend bathing..
I had a Hallmark proof 65 LIB nickel with green-goo than that Jeff. I soaked it in diluted white ammonia over night. All the green came off. A tiny shadow remained where the spot had been. Still re-graded PF65 on submission.
i'll be an optimist and say if done right, i think these babies will shine again. keep us apprised.
I can almost picture in my head the album those coins were in! I think.....
HAPPY COLLECTING
Good luck !!! 🙏
Don't forget to use plastic tongs to hold those guys by the edges. Drum roll please......Peace Roy
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I agree with roadrunner on the nickel - ammonia brief soak, then tamp with ammonia-soaked Q-tips and then liberal wash and tamp dry with the high nap cotton white towel. I've done it with far more valuable coins with good success.
The cent is problematic; too bad lovely color but may not respond to the gentle techniques as above. I would try the acetone mentioned but not prolonged exposure obviously. That green looks to NOT be just superficial.
I would not expect much on the nickel grade, even if it cleans.
Well, just Love coins, period.
The damage has been done. As you guys had said, the mirror surface has been etched.
The acetone soak and following rub only took off some residue. MS70 peeled the remaining right off.
I think the Lincoln looks ok. The spotting is not as distracting as the Nickel.
As expected, very unfortunate but no more damage will happen now that the PVC is removed.
My Collection of Old Holders
Never a slave to one plastic brand will I ever be.