(!!!) (BEST RCA SINGLE) 6CA4 RCA NOS 1963 (53/40 and 54/40)
(!!!) (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) 6X5GT RCA NOS 1946 (55/40 and 60/40)
(!!!) (Best Single) EZ81=6CA4 RFT East Germany NOS 1970's (49/40 and 49/40)
(!!!) (Best Single) EZ81=6CA4 RFT East Germany NOS 1970's (49/40 and 50/40)
(!!!) (Best Single) EZ81=6CA4 RFT East Germany NOS 1970's (50/40 and 50/40)
(!!!) (Best Value Pair) 6106 Bendix 1950's rebranded 5Y3WGTA Heintz & Kaufman NOS (66/40 and 70/40 x 2 tubes)
(!!!) (Best Value) JAN-6X4WA Sylvania NOS 1972-1979 (1 in stock)
(!!!) (PAIR) 6AL5 RCA NOS 1970 era (47-47/40 and 47-47/40) (Copy)
(!!!) (PAIR) 6AL5 RCA NOS 1970 era (47-48/40 and 46-48/40)
(!!!) (Recommended Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (56-59/40 and 57-60/40)
(!!!) (Recommended Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (57-61/40 and 57-62/40)
(!!!) (Recommended Pair) 83 Sylvania branded RCA NOS 1984 original boxes (61-62/40 and 60-62/40)
(!!!) (Recommended Single) 5Z3G RCA NOS 1954 (58/40 and 60/40)
(!!!) (Recommended Single) 5Z3G RCA NOS 1957 (57/40 and 58/40)
(!!!) (Recommended Single) 5Z3G RCA NOS 1971 (56/40 and 58/40)
