Masking tape help?

Hey guys.
About a year ago I bought a lot of about 3 dozen pennies at a local auction. Searching through them i saw that they all had masking tape residue on them. My guess is that someone taped them into an album...
But anyways is there a way to remove this without damaging the coins? Im deathly afraid of harming them. I hear acetone works but im too afraid to try haha.
Thanks
About a year ago I bought a lot of about 3 dozen pennies at a local auction. Searching through them i saw that they all had masking tape residue on them. My guess is that someone taped them into an album...
But anyways is there a way to remove this without damaging the coins? Im deathly afraid of harming them. I hear acetone works but im too afraid to try haha.
Thanks
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"Paper money eventually returns to its intrinsic value---zero."----Voltaire
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