Japanese-made puzzle ball from 1980, featuring a transparent design and multi-colored beads. Released at the time to compete with the Rubik's Cube, it boasts a high level of difficulty and over 10 billion possible combinations. - Model Name: Puzzle Ball - Country of Manufacture: Japan - Year of Manufacture: 1980 - Colors: Transparent, Black, Multicolor - Material: Plastic I used this at the time and have stored it for a long time. Due to the plastic material, there is some discoloration. Thank you for your understanding. Thank you for looking.