Any vintage speaker specialists out here

Hi, can anyone help me in putting a price tag on an original Bose 2201 speaker. It is not listed in audiogon blue book.
I contacted Bose and they offered me any home theater system in exchange for the speaker. It is a large floor speaker, I only have one. The serial number is 55. Any help would be appreciated
Depending on condition, i have seen them in nice condition at $900.00 the sad thing about vintage equipment is that the glues that hold the cabinet's and other idems deteriorate over time,and that would be for a pair,single maybe half  of $900.00.could only be used as a extension speaker. good luck