Nice work and good design. I like the concept and the overall coin of 3d printed. Do you make it yourself or you get is custom make from the 3rd party. And will you be issuing certificate of the material that is going to be used like for gold or silver?
Thank you for your interest!
The design and 3D model are all done by me. The 3D printing part is handled by Shapeways

Regarding the certificate I'm not 100% sure but I'm assuming Shapeways will issue you one.
Let me know if you have any other questions!