Stackable Filament Sample Coin Holder

This is a stackable holder for the Filament Sample Coin design I posted. It is sized for coins with a diameter of 29mm (excluding the rounded edge, which takes the actual diameter to 32mm) and thickness of 3mm. Even if you don't stack them, you may want to print two and use the second one turned upside down as a cover to prevent coins from going all over the place if you accidentally bump into it. Not that anyone I know has done that. Several times.