5U4/GB type tubes 

Large majority came from a local technician who purchased many himself from the FAA and other surplus sources over the years. Consider all of them used though some may actually be NOS w/o  the box. 

Therse are seven 5u4-GBs. They appear to be the taller-bottle type, all appear to be the typical US tube-producers from the ol' days: CBS, Raytheon, GE, Sylvania, RCA. 

High bidder takes this big lot! no reserve - good luck! ships at 2.0 lb total. 

Please note S/H costs include postage and handling. Thanks for looking!