How To Remove The Mint Rinsing Agents 'Spots' On Clad Coins?

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Author	Replies: 7 / Views: 1,472
SearchHound New Member United States 28 Posts	Posted 06/19/2021 1:43 pm I have a few IKE's and Kennedy's thinking of sending out to TPG however, they have spots from the mints rinsing agents. I've researched dipping using acetone, ammonia, rinsing with distilled water, etc.. trying a few (on other clad coins) but nothing is working. Any tried and proven methods that won't be rejected by TPG as "cleaned?" Or should I send them out and request conservation services? Will that remove the spots? Thanks for your replies in advance! Report this Post to the Staff

John1 Moderator United States 56855 Posts	Posted 06/19/2021 4:46 pm As far as I know nothing will remove those without damaging the coin. John1 Report this Post to the Staff
suipakpaikungfu Pillar of the Community United States 992 Posts	Posted 06/19/2021 6:58 pm Report this Post to the Staff
BadThad Bedrock of the Community United States 19935 Posts	Posted 06/19/2021 7:47 pm with John. Lincoln Cent Lover! VERDI-CARE™ INVENTOR https://verdi.care/ Report this Post to the Staff
Dorado Bedrock of the Community Canada 24885 Posts	Posted 06/19/2021 10:11 pm Report this Post to the Staff
mikem007 Valued Member United States 318 Posts	Posted 06/19/2021 10:47 pm Lord knows I tried, tested on a lot of mint set coins that I wasn't keeping. Every once in a while I'll try again. My last cleaner attempt was using MS70 cleaner which is incredibly damaging to the surface when viewed under 5x magnification. My take on those mint rinse spots is that they are etched into the surface... no chance at getting them out. Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21786 Posts	Posted 06/19/2021 11:37 pm You could try a long time soak in acetone, but I don't think that it will make any difference. Those spots are now on the coins permanently. if you try any other cleaning than an acetone soak, the TPG's are experienced enough to identify any other cleaning method almost instantly. I don't think that the individual values of the coins you have, will justify any professional restoration fees. Report this Post to the Staff
Ballyhoo Pillar of the Community United States 1613 Posts	Posted 06/20/2021 3:08 pm Agree with Mike, a permanent blemish. However, the third party graders still grade them accurately despite the milk spots. I once had a 1964 Kennedy NGC pf68, based on the tiny flaws under magnification of my own it seemed about right compared with a near flawless pf69 that replaced it. However, I imagine you and I are the same on eye appeal. Just throwing that out there. ANA member - PAN Member - BCCS Member There are no problems only solutions - the late, great John Lennon Report this Post to the Staff
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