Cuboro Standard 54 pieces Marbles (alternative) We purchased the authentic product for our child because Shogi player Sota Fujii used it. It seems their spatial reasoning skills have improved, and they have become good at geometry. There are no missing items other than the marbles. The blocks are in good condition with no noticeable scratches. (Please note that this is a visual inspection, so there may be oversights.) Toy genre: Educational toys/Learning toys