I have in my possession several 1/4 inch tape reels (large reel) which used to be used at my work for music-testing studio sound mixing consoles on a Revox A77. These reels date from the 70s and 80s and contain recordings produced by George Martin. I don't think there is any Beatles music on them but there is orchestral, military band and various pop artiste recordings of that era. Does anybody know if these will be worth anything or if anybody would be interested in them. Thanks