"A Clock Encyclopedia to Flip and Learn" Toshikazu Ikeda Price: ¥2200 Some parts of the flip-up sections have folds. There are areas with tape repairs. The clock on the last page has movable hands. (I think the absence of the flip-up section below is because there were cut-out hands.) #ToshikazuIkeda #Toshikazu_Ikeda #book #nature/mathematics