The contents are clean as it's mostly unread, but there is a stain on the inside front cover. The cover is also generally clean, but there are scattered age spots on the top edge, typical of old books. It seems to be out of print now, and the price of used books is rising (2,000 yen and up on Amazon). "Social History of Clocks" Sakae Sumiyama Price: - #SakaeSumiyama #Sakae_Sumiyama #book #ElectricityAndMachinery/Machinery #WorldHistory #History #JapaneseHistory #NaturalScienceAndTechnology