Fun set of Box Dollars

Coin club member handed me these last night at our meeting and said he has never had them open. I tried while there but they were stuck! Took them home with me and added a few drops of oil in the seem to try and loosen them up. It might have help, but still needed to use a rubber coated pliers to open them. Here are some quick images before cleaning the residue out.






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Box or Opium dollars are very cool, and not cheap!!
Not opium dollars. Them's picture holders!
Back when I was working in the shop we one time bought in a batch of 50 or more average circulated Columbian halves in an old leather purse that were horribly scummy with green slime. I couldn't do anything with them as they were, so I threw them in a jar of acetone and let them soak for a few days.
When I opened the jar to rinse them off under the hot water tap, I noticed that one of them was leaking something. Poked around on the rims until I found the pivot point and opened it up to find the melted remains of a picture and its cellulose(?) cover.
Unfortunately the list just keeps getting longer.
I have also seen pictures of Columbian half dollars that have been turned into box coins.