I found a batch of coins once I got my X-70. Every one was pretty nasty so how do I clean them. I tried soap & water, vinegar, salt, and the other day it dawned on me. I use to clean coins with a pencil eraser. In parks they take ground up tires for playground equipment ground cover. I took some of this pelletised material and all my coins and put them in a rock tumbler. It works great! All you have to do is wash the coins and you have some really clean coins.
Thought this might Help
George
Thought this might Help
George