This is the base of a Catan trophy. It fits the city model of Dakanzla's Catan set found here catan-style boardgame 2.0 (magnetic & multicolor) by Dakanzla - Thingiverse. Print the city at 600% scale and then glue it to the base. The multicolored version of the city can be found here city by Dakanzla - Thingiverse.
The base prints easy with no supports.
I've also included the Prusa Painted .3mf file for easy multicolored printing.
The author hasn't provided the model origin yet.