I wanted to create a realistic coin for Gloomhaven, so after a few days of messing around in ZBrush I ended up with these designs.
There are 3 different coins with slight deformations to add a bit of variety. They are also slightly crooked to give them the feel that they've been weathered and deformed by people using them.
The last image shows the coins printed on my Prusa MK3S which was to show that you can get decent fidelity with an FDM printer. The final coins were painted and printed by a friend on his Resin printer.
I suggest printing them vertically to maximize the visual fidelity.
I also suggest adding a raft and printing with supports.