How much is a print of WIJMER High Glory worth?

I have a large Wijmer sofa size print (original gold frame included 30" x 66"). It has a gold printed plate on the bottom of the print, with the name of the print (High Glory) and the name of the artist (Wijmer).

In doing research on another Wijmer print I owned (The Red Caboose) by the same manufacturer three years ago, I learned the manufacturers were a home group in the late 50's-60's. (sorry, I tried to remove it from the wall now, but could not remove, for this ANSWER.) My other Wijmer print The Red Caboose was large and beautiful, and lost in a fire. It was a print many wanted to buy but could not find. I learned little is known about Wijmer or these beautiful prints (many landscapes). But based on the size of the print, and the fact that it was hard to find (but not RARE), opinions concluded these large over-sized prints (in Excellent condition) are valued about $250 retail prices. (There are various smaller sizes of the same print.)

Best wishes to you. Hope this helps.