Irreplacable treasures?


What do you consider to be some of your greatest or favorite LPs, CDs, eight tracks, that you would never get rid of, or give away?
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A great old folk music LP from the 60s.
The title is "Bob Gibson & Bob Camp at the Gate of Horn".
I have a sealed MoFi UHQR of Alan Parsons "I Robot". This record has been with me for 20 years and is in absolute mint condition - no marks or tears on the sealed wrap. I keep it displyed on a high shelf to preserve the condition. I also have an opened UHQR copy to play.
Half of my record collection is not for sale or exchange ever:

1. Can... a complete collection of records and CDs throughout their existance.

2. Irmin Schmidt's (Can's keyboards and piano) Filmmusik complete collection(albums 1 thru 5).

3. Fish 4 Fish band only created two albums one I have on CD- Divin' and another on record which is self-titled

4. A complete CMP jazz collection albums 1 through 7.
5. A complete Pekka Pohjola albums.

6. A complete David Sylvian.
My complete collection of first pressing Beatle albums on Capitol and Apple including the Butcher album. Each was purchased within 7 days of release.