I purchased this from a toy store called BorneLund over 10 years ago. It has a design reminiscent of Showa-era kaiju (monster). The material is a smooth, hard, and heavy plastic, similar to reinforced plastic. I am selling it because I no longer have a place to display it. The grid squares are 1 cm each. There are some paint chips, so please consider this a used item and only purchase if you understand its condition.