Tsuchiya Koitsu ( 1870 - 1949 ) was a Japanese painter. Tsuchiya Koitsu s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 499.75 USD for Sumidagawa Suijinmori in 2004 to 4075 USD for Showa era (1926-1989) in 2019 , based on the size and medium of the artwork.