The danger of cleaning coins, is that you will damamge them. You can ruin their value by scratching the surfaces, leaving fingerprints, or by using harmful chemicals which damage the surfaces. If they are covered in dirt, he could try rinsing the dirt off with distilled water. I would try not scrub the coin surface directly.
I don't understand what you are describing... Did your friend find one 5 cent piece from 1856-1919?, and twenty 5 cent pieces from 1864?
I don't understand what you are describing... Did your friend find one 5 cent piece from 1856-1919?, and twenty 5 cent pieces from 1864?



















