Huh? Was there a model of a coin in game? Nah. Just like what Bloo did. This is a custom coin just for people to use. It is based on Bloo's from his coin model, but stretched have it's UV mapped changed to be more fitting for the coin. Zeldaboy did help in and help out on UV Map and mesh as well; and helped get the added rainbow effect on the coin, not just the shiny gold effect. If you point the coin at the right angle. You will see the rainbow effect. Here, I cheesed it by using a light render at the coin to see it.

Reason I used Spider's Niyaka? Well... kinda the helping promotion of his upcoming video.

Enjoy the soon coming item. I am going to make it more based as Bloo's since it is familiar to everyone on how Bloo did it and many people think that both Ninjala and Splatoon are similiar.

https://www.deviantart.com/rocketboy3005/art/Jala-coin-Ninjala-Gmod-861263775