Summary

A minimal, modern challenge coin holder/stand. Sized for 40mm coins (with 3 or 4mm thickness), but can be re-sized in your slicer for most common coin sizes. The circular base and height are also 40mm, which makes for pleasing proportions, and helps the holder almost disappear behind the coin from the front.

High resolution for resin printers.

Supports suggested, especially at larger sizes. For 32mm coins, print at 80%; for 50mm, print at 125%.