I got rid of many longbox CDs (for large sums of money indeed) which would have been the most rare, but I still have Metallica´s s/t, Depeche Mode - Music for the Masses and Kiss - Revenge with longboxes and all three fully autographed by respective bands.

I also have two Sabbath rarities from the Tony Martin era - the unofficial In Moscow 1989 proshot DVD, and a Russian copy of the in itself ultra rare Japanese remastered Headless Cross cd with a bonus track, poster and gatefold mini-vinyl cover.

Also have an original vinyl of David Lee Roth´s Sonrisa Salvaje, the Spanish language version of Eat´em and Smile that I bought when on holiday in Spain way back, seems it has become quite expensive.

And I have rare early CD pressings of Abba Live! and Abba Greatest Hits 2, not the ultra rare 1st though but still from the early 80s.

And last but not least, Icon´s 1984:Live Bootleg and An Even More Perfect Union CDs.