A D20 coin for flipping.
You will most likely need an SLA printer for the fine details. I uploaded three different versions: The coin itself, one for printing
...さらに表示 without extra supports on a Form 2 and one with a sprue for casting.
The ones in the picture were printed with the Rigid resin, filled with black and Castable Wax and sanded flush for a nice two-colour effect.
Have fun!