Yelva Petrea Sophie Vermehren ( 1878 - 1980 ) was a Danish painter. Yelva Petrea Sophie Vermehren s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 35.01 USD for Opstilling med gule blomster og hvide margueritter. in 2004 to 1239.18 USD for Still life with flowers in 2018 , based on the size and medium of the artwork.