I'm not sure who the original designer of the trophy is, but you can see it:
I designed a magnetic container “bottom” so you can store 3D printed player pieces in the trophy. It uses 3mm x 3mm cylindrical magets (axial polarized). Here is a remix of the trophy with the holes designed in it: https://www.printables.com/model/588130-catan-trophy-magnetic
The author marked this model as their own original creation.