Acetone Rinsed Coin To Slab

Whoa, they must be using trained honey bees... Only way I know of to detect minute trace smells... SERIOUSLY look it up... They use photo optics to detect the bees tounge dropping after it has been trained to detect a particular scent using a sugar reward!

-BadThad please chime in here... Time to remix the formula? lol

Cacade, I wouldn't think it would linger, but I have a gold proof that has been touched and I was going to acetone it and he said no, and some key cents in AU that I was going to do the same. First time Ive heard that, I know it evaporates quickly

Acetone is too volatile to "linger" on a coin. I'm willing to bet the coin took an early cleaning long before it took its acetone bath.

I will stop by his shop and ask him which service it was since he is letting me send my coins in his shipment for grading next week and I don't want a surprise. I wanted do a rinse with acetone since the copper have been in the albums for many years and with the fakes out there.

I'mgetting to worry about keeping the values if I check out and they need to be sold by heirs to get true value.

I believe the only sort of non-visual, surface analysis that is being done at the TPGs is under the PCGS Secure service. They have a machine, nicknamed "the sniffer", that detects organic substances on coins. If I remember correctly, acetone will show up in their analysis, but they will deem it "surfaces altered" rather than "cleaned".

There must be some other characteristic of the Morgan $ in the OP that convinced them that it was cleaned.

About 90% of all pre 1900coins have been previously cleaned. PCGS, NGC and ANACS will straight grade 'cleaned' coins, it is when they have decided that the coins have been 'improperly' cleaned that they details grade the coin. There are a few things that will determine this: who the submitter is ie.(David Lawrence vs Joe Blow), who the graders are that day (for the census), how severe the cleaning was(hairlines, scratches, color etc.). Remember, grading is a business, they want you to resubmit as often as possible. As for acetone, when I worked in the grading/appraisal room at Heritage, I can tell you that virtually all coins, except proofs, where dipped in an acetone bath before submission to a TPG.

I've rinsed coins in acetone before submitting them to ANACS without any problems.

I can't even start to imagine what type of machine could detect Acetone used on a coin. Especially if done and sent in for grading weeks or even Months after the Acetone usage.
Of course if the TPGS has cameras in your house and sees you doing this, then yes, they would say something.