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(!!!!) (Recommended Pair) 6CA4 RFT East Germany (Funkwerk) NOS 1970's (48-48/40 and 49-49/40)
(!!!!) (Recommended Pair) 6CA4 RFT East Germany (Funkwerk) NOS 1970's (47-48/40 and 48-48/40)
(!!!!) (Recommended Pair) 6CA4 RFT East Germany (Funkwerk) NOS 1970's (49-49/40 and 48-49/40)
(!!!!) 5U4G GE NOS 1952 (55/40 and 51/40)
(!!!!) UX-280 RCA Radiotron Balloon used/60% 1930 era some white oxide flakes inside tube (38/40 and 38/40)
(!!!) (BEST PAIR) 12AL5 Tungsol NOS 1960 (48-48/40 and 48-48/40)
(!!!) (BEST PAIR) 5726=6AL5 RCA NOS 1970 era (47-47/40 and 47-47/40)
(!!!) (BEST PAIR) 5726=6AL5 RCA NOS 1970 era (47-48/40 and 47-47/40)
(!!!) (Best Pair) 5Z4 RCA NOS 1959 (50-50/40 and 51-51/40)
(!!!) (Best Pair) 5Z4 RCA NOS 1959 (51-51/40 and 52-52/40)
(!!!) (Best Pair) 6AL5 Tungsol NOS "D" getter 1957-1965 (48-48/40 and 46-48/40)
(!!!) (Best Price) 5726=6AL5 Sylvania JAN NOS (4 for $8.99)
(!!!) (BEST PRICE) 80 US Brands used/good (5 in stock) ($9.99 each)
(!!!) (Best Single) 5993 Bendix Rectifier NOS 1960 (52/40 and 53/40)
(!!!) (Best Single) 5U4GB CBS NOS double "D" getters 1958 (59/40 and 62/40)
(!!!) (Best Single) 5U4GB CBS NOS double "D" getters 1959 (59/40 and 60/40)
(!!!) (Best Single) 5U4GB CBS NOS double "D" getters 1959 (60/40 and 63/40)
(!!!) (Best Single) 5U4GB Hytron NOS "O" getter halo 1960 era (59/40 and 60/40)
(!!!) (Best Single) 6087=5Y3WGTB GE 5 Star NOS 1968 (52/40 and 52/40)
(!!!) (BEST SINGLE) 6CA4=EZ81 GE NOS 1970 (55/40 and 55/40) 1% section balance
