Corrosion/Carbon? Black Spots On Morgan. Need Advice.

An 04-O Morgan is fairly common and not a high-value piece so I offer this advice with the caveat to all that I would not offer the same advice for an MS 1893-S Morgan.

Acetone will have no effect on the spots unless they are organic (highly unlikely). But give it a try to verify this. If this were PVC you'd notice an oily substance on the surface that eventually turns to green slime. Most likely these are carbon spots. This is a form of ugly and undesirable toning.

If the acetone doesn't clear up the problem, acquire a jar of E-Z-Est jewelry cleaner (dip). Immerse the coin in the cleaner while swishing back and forth for no more than 3 seconds. Immediately and thoroughly rinse the coin in running water. Place on an absorbant cloth and lightly pat dry. Do not rub. The spotting should be gone and evidence of this "cleaning" should be very minimal.

This will spark controversy among the purist that advise "never clean coins". To me it's depends on the situation. Improving a common piece for your own collection should be a personal choice.

Mother in law.

Thanks for the quick feedback SeatedNut. I will definitely mention about usually never cleaning coins and then share these thoughts with her.

Hello - this is my first post on forum. Can you please comment if the black spots in the attached pictures are related to comments above and "E-Z-Est jewelry cleaner (dip)" is the solution. Thanks in advance.