I have dozens of these and in several brands fuji Memorex .Kodak ..etc ..and some are brand new sealed unusef and allotvofvthem have defese telemetry data and rocket data on them it said collectable for data and for usic recording .etc etc ill sell them for twenty five bucks a piece ..i hve fortyor fifyy of them ...so ..i priced the memorex ones at1300 - 3500 a piece some of them some arr still sealed anf not ben opened ..and somr havedata onbthem the lot number said military defnse data and rockrt telemetry or sonr such ....some peole collect them the alluminum reels are 35-75 bucs empty itvsaid on Google lense...but if someone collets them it's a fair price it also said for recording studio master tapes ..but I don't have a clue .