Ultimate Splendor Box - Adjusted Coin Holder
The original design (https://www.thingiverse.com/thing:4586346) is amazing. However, with my version of Splendor (NL), the coins were slightly larger and thus didn't fit inside the original coin holder. So I recreated it in FreeCAD and adjusted for the slightly larger coins. It still fits inside the original box from the original, so you only need to print this holder and you can print the rest of the parts from the original. I didn't include the logo on the sides as it was a bit too much effort for me, but the design file is included if you'd like to add it.
Important printing notes about the files included
I designed the model to be accurate, however my Ender 3 printer was not. So I recommend you to first print the single_coin_holder_prototype.stl first, to see if your coin fits neatly. I need to recalibrate my printer, but was too lazy, so I simply scaled all models by 1% for a perfect fit, and you might need to do the same (hence the included prototypes). If the coin fits neatly, you can try the same (scaling) with the prototype.stl. If all fits well, then you can safely print the final_coin_holder.stl.
Credits
All credits go to the original designer NoahMishkin: https://www.thingiverse.com/thing:4586346, I merely re-created and adjusted the coin holder.