Which Coin Tongs Are Good For Small And Large Coins?

I'm comfortable with fingers in acetone for the same reason the acetone works on the coin - crud is happier in suspension than it is on the coin or on my fingers. Just don't dig the coin up with your fingers and head for the acetone without washing your hands.

I soak in the smallest container possible - no larger than a jigger glass - and trade off far easier handling (a toothpick and my fingernails) for more frequent solution changes.