coins

[Planet1mars]

How do you get the weird black stuff off of coins

 

[jonnyrebel00]

what kind of coin? what metals? are you sure you want to clean them? cleaning will degrade the value some times.

 

[Planet1mars]

there newer coins i dug up today nothing worth saveing. just very dirty

 

[Charlie P. (NY)]

Get a cheap rock tumbler from a place like Harbor Freight and some course aquarium gravel. Put a cup of water in with 1/4 drum full of coins and 1/4 of gravel and let 'er rip overnight. (Do not overfill the drum).

Good enough to pass to a cashier in the morning.

 

[UncleVinnys]

Soak in vinegar ( a mild acid ) and check every 15 minutes or so.
You can rub gently with an eraser or non-scratch pad the clean pots with.
Then rinse thoroughly, clean with alcohol.