Efter J F Martin ( - ) is a painter. Efter J F Martin s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 270.33 USD for Stockholm tagen från Blaiseholmen in 2014 to 409.39 USD for Utsigt af Stockholm från Långholmen på stadens vestra sida in 2015 , based on the size and medium of the artwork.