Gerard Valk ( 1651 - 1726 ) was a Dutch painter. Gerard Valk s works have been put up for auction numerous times, with realized prices varying from 128.64 USD for Scotiae Provinciae intra Flumen taum, et Murra fyrth fitae utpote Moravia, Badenocha, Atholia, Aberdonia, Baneia et Mernis in 2004 to 418.59 USD for Insularum Indiæ Orientalis, Nova Descriptio in 2009 , based on the size and medium of