I went back to my 1840 house and I got the reverse of a CAPPED BUST HALF DIME AND POSSIBLY TWO SEATED DIMES BUT THEY ARE STUCK TOGETHER PLEASE HELP THEY WONT COME APART. I’ve only been using water I don’t want to hurt them.
Sometimes when things are stuck together you can work them free by putting in a freezer like over night then take them out and let them warm up....repeat a couple times. Or just take out of the freezer and drop in hot water. Expansion and contraction caused by the temperature differences can loosen them up. Especially if some amount of moisture managed to get in between them somewhere.