Gunnvor Henriette Advocaat ( 1912 - 1997 ) was a Norwegian painter. Gunnvor Henriette Advocaat s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 494.31 USD for R√∏dt blomster in 2004 to 26654.12 USD for Transparent gr√∏nt in 2006 , based on the size and medium of the artwork.