Help - what is this worth?

[Woody Hanscom]

Need help from someone out there - found somthing in my family's house,
trying to figure out if it's worth anything.

Star Trek Book and Record set from Peter Pan Industries/Power Records
(catalog #BR513), featuring the stories A Mirror for Futility and The Time
Stealer, copyright 1976, still in it's original shrinkwrap, unopened. One
small (less than 1cm square) notch taken out of top right hand corner,
otherwise undamaged.

Any ideas? Please e-mail me at djw...@geocities.com, as I don't frequent
this newsgroup.

Thanks in advance -

Woody