Sei Koyonagui ( 1896 - 1948 ) was a painter. Sei Koyonagui s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 571.22 USD for DEUX BICHES in 2003 to 5288.99 USD for La Volière in 2017 , based on the size and medium of the artwork.