My Last Dollar

This is another keychain.
It is holding an Australian $1 coin. The idea being that I will always have one dollar left - my last dollar.
I meant for the coin to be a slightly loose fit, but it is firm. I will make the ring a little larger.
BTW - Australian $1 is 2.5mm thick and 25mm diameter.

Ahhhh!
I put a chamfer on the inside space for the coin, and the edges of the chamfer make the space too small for the coin to be a loose fit.

Version two is thicker, but has enough space for