George Maciunas ( 1931 - 1978 ) was an American painter. George Maciunas s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1100 USD for Stomach Anatomy (Fluxus Apron). in 2012 to 4750 USD for Fluxpost stamps in 2013 , based on the size and medium of the artwork.