What are the most treasured in your music collection? Not neccessarily what the music is but what it represents. Had it the longest, signed, rare etc
A couple of mine:
I can remember my dad having these in the 70's and he gave them to me so they are around 35 years old I think. I rarely play them but obviously treasure them.

3 disc version with both mono and stereo versions with a disc of early singles and out takes. Plus a Syd Barrett replica scrapbook with his drawings, paintings etc
One of my very first C.D's. Nuff said. BTW-It's a Hawkwind album.
I know some of you out there are going to have some top quality stuff so get snapping and posting.