(!!!) (Best Value Pair) 866A RCA like new 1956-1959 in white boxes (60-62/40 x 2 tubes)
(!!!) (Best Value Pair) NL-866A National USA NOS 1999 (58/40 x 2 tubes)
(!!!) (Best Value) JAN-6X4WA Sylvania NOS 1972-1979 (1 in stock)
(!!!) (READ REVIEW) GZ34 Mullard UK shield logo NOS 1962 (59/40 and 59/40)
(!!!) (Recommended Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (56-59/40 and 57-60/40)
(!!!) (Recommended PAIR) 314A Western Electric Engraved base NOS 1930's (58-65/40 and 60-65/40)
(!!!) (Recommended PAIR) 314A Western Electric Engraved base NOS 1930's (58/40 and 64/40 x 2 tubes)
(!!!) (Recommended Pair) 866A GE NOS 1971
(!!!) (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)
(!!!) (Recommended Single) 866A RCA tests like new 1956 (58/40)
(!!!) 249B Western Electric Engraved Base NOS 1930's in 249C box (58/40)
(!!!) 314A Western Electric Engraved base NOS 1930's (full-wave rectifier) (56/40 and 63/40)
(!!!) 314A Western Electric Engraved base NOS 1930's slightly tilted glass in base (full-wave rectifier) (56/40 and 62/40)
(!!!) 314A Western Electric Engraved base NOS 1930's slightly tilted glass in base (full-wave rectifier) (58/40 and 66/40)
(!!!) 314A Western Electric Engraved base NOS 1930's small rattle inside base (full-wave rectifier) (56/40 and 64/40)
(!!!) FAA-6X4WA Sylvania NOS 1965 (55/40 and 57/40)
(!!) (2nd BEST SYLVANIA PAIR) 6X4 Sylvania Philco NOS 1959 "D" getter (53-55/40 and 55-56/40)
(!!) (6202 Best Value) 6202 GE rebranded 6X4WA GE JAN NOS 1981 (61/40 and 64/40)
