About this 3D model
To realize this puzzle that I know for more than 50 years, you must print: the model 1 in 1 copy the model 2 in 3 copies the model 3 in 2 copies
To realize this puzzle that I know for more than 50 years, you must print: the model 1 in 1 copy the model 2 in 3 copies the model 3 in 2 copies