mentalmetal314 (57)in #steemit • 8 years agoRE: Summer Series #5: Should You Clean Your Coins or Not? Better Think Twice If You Do.Yes I have tried this method on an old silver coin I found in the water that had turned black from years of being…muhammad-nauman (-2)(1)in #bitcoin • 8 years agoRE: Bitcoin Cash Draws Close! What Way Will It Go?