This is a coin I made a while back extruded from the MOTHER/MOTHER 2 earth logo. I've never had an opportunity to print it, but I think it probably needs to be scaled up a bit for all the details to show (depends on your printer). Figured I should just go ahead and share it. I included the .blend file for anyone that wants to play around with it, and the original .svg file of the logo, which I believe was taken from Super Smash Bros. Brawl.
If anyone has a successful print, please share a photo.
Have fun :)
BTW I bet it could make a good stamp if you mirror the model and mount it on a handle or shaft of some sort. ;)