The coins originally created by Ipsec had some problems printing out on Up! Mini printer I am using. The icons in the centers, printed separately, so the coins fell apart into a ring and a logo.
I loaded the troubled 3 into Blender v2.7 and used a Boolean operation to unite the logo with the coin in one mesh, instead of two meshes intersecting. IPsec's White and Fire coins required no alteration.
The coins then printed perfectly.
I painted them with some Reaper paints, and gave them a clear spray finish.
The coins themselves are actually quite useless when playing. We used them to track the attack and defense values of creatures, but some cards like enlarge, will require 14 coins, and only last one round. However, I did use a coin to mark which of my cards had summoning sickness, which was way better than having the card face down like usual.
That said, they are a very nice thing to have, and I'll instead put them up on a wall in a picture frame.