Clayton,
Can you tell if it was recorded in a mastering facility or recording studio? If it is an original master recording, it may have some value to collectors. Also, if the mix is different than the official release, if it is a test recording of an early mix or something, then it would certainly be more valuable.

It could also be a bootleg cut on a home unit.... but if that is the case you should be able to tell, as it would probably not be as high quality as a studio-cut recording. Are you able to play it, and if so, how does it sound?