, van Eyck,Rogier van der Weyden<span>, </span>Dieric Bouts<span>, </span>Petrus Christus<span>, </span>Hans Memling<span>, </span>Hugo<span> van der Goes and </span>Hieronymus Bosch<span>.</span>
I believe the answer is Flemish.
Yes they do. Based on how old the artwork is, who created it, and the condition that it is in, determines to value of the aforementioned artwork. <span />