I apologize but I do not have a ring sizing tool. The inside diameter is about 2cm though, see photos.

It is engraved “925”.

The words are all misspelled so it says “Unietd” instead of United, and “Ollar” instead of Dollar, etc. I assume this was done intentionally to show there were no real coins used in the manufacturing process? But I am not sure.

Neat looking coin ring!

AB05