So, these were designed for a game I used to play so more players cold play together. They have Greek letters, numbers and a more rounded, simple style. They are designed to be easy to recreate and print relatively fast. I may add more just like my bookmark collection.
Ideally it should be printed with 20% infill and 0.2 layer height at 50mm/s so it has a bit more detail.
The author hasn't provided the model origin yet.