Thanks for the answers.
I have had them for awhile and really enjoy them. I am the second owner and the first owner ordered them special. He was an IBM exec and knew sound well.
That said, I just don't have the space for them anymore in my home and am thinking of selling them. Don't know if I want them on Ebay. Would prefer they end up with someone who really appreciates them.
What is the best way to evaluate the value?