Joseph Jakob Von Plenck ( 1738 - 1807 ) was an Austrian painter. Joseph Jakob Von Plenck s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 956 USD for Icones Plantarum Medicinalium in 2004 to 1920 USD for Icones plantarum medicinalium in 2005 , based on the size and medium of the artwork.