Gerard Mercator (after) ( 1512 - 1594 ) was a Danish painter. Gerard Mercator (after) s works have been put up for auction numerous times, with realized prices varying from 35.33 USD for Cornubia Devonia Somersetus Dorcestria Wiltonia Glocestria Monmetha Glamorgan Caermarden Penbrok Cardigen Radnor Breknoke Herefo in 2004 to 100 USD for Cornubia, Devonia, Somersetus... in 2010 , based on the siz