The Coinfusion Project was a joint project by four original geocoin issuers. They are Moun10bike, Team Fisur, Dhobby1, and Indy Diver. It was originally meant to be a "secret" project that saw the geocoins distributed through geocaches and face to face trades. There may be as many as 19 different versions of this geocoin. This example is the Black Nickel, which had only 50 minted in the first round, and another 25 in a second round of minting, plus 50 that have "Indy Diver" on the edge (so there are two different Black Nickel versions).
Nice geocoin, and I am probably pretty fortunate to have one.
Size: 38 mm
Weight: 27.4 g
75 geocoins minted (plus 25 with edge inscription)