Super-Kamiokande 500-piece jigsaw puzzle, size 38x53cm, featuring the design of the Institute for Cosmic Ray Research. Made in China. I don't think all the pieces are there anymore. I bought it because I was fascinated by Kamiokande. I'll sell it to a geek. Please bid only if you understand that it's a used item. m(_ _)m - Brand: University of Tokyo, Institute for Cosmic Ray Research - Model Name: Super-Kamiokande - Size: 38 x 53 cm - Number of Pieces: 500 - Edge Shape: Right angles Thank you for looking.