Frederik Frits Vermehren ( 1823 - 1910 ) was a Danish painter. Frederik Frits Vermehren s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 195.6 USD for En gammel bondekone syr en kjole til sit barnebarn. in 2004 to 15212.6 USD for Dansk sommerlandskab. in 2006 , based on the size and medium of the artwork.