For coins that don't fit perfectly, I prefer the ones with the foam insert to stop them from rattling around...Mike
Well the coin I have is 22.8mm and I have a 22mm black ring airtite that is a little to tight and locally I cannot find a 23mm. As I dont need to place a order with JP, its hard to swallow the $5.00 min shipping charges to have a single 23mm airtite mailed.