Nico Koster ( 1940 - ) is a Dutch painter. Nico Koster s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 422.12 USD for Karel Appel in N.Y. 1983 in 2008 to 1189.87 USD for John Lennon and Yoko Ono in room 902, Amsterdam Hilton, 1969 in 2020 , based on the size and medium of the artwork.