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(!!!) (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 SINGLE) 6X4 SER = LM Ericsson Sweden "D" getter NOS 1950's slightly tilted glass (52/40 and 54/40)
(!!!) (BEST VALUE SINGLE) 6X4 SER = LM Ericsson Sweden "D" getter NOS 1950's slightly tilted glass (54/40 and 54/40)
(!!!) (Best Value Single) EZ80 Philips Miniwatt France NOS 1963 (63/40 and 63/40) 1% section balance
(!!!) (Best Value Single) EZ81=6CA4 Sonotone USA branded Westinghouse NOS 1961 (54/40 and 56/40)
(!!!) (Best Value) 5U4GB RCA low hours/like new 1970 (55-55/40) 1% section balance
(!!!) (Best Value) 5U4GB RCA used/tests like new 1955 (60-62/40) 1-3% section balance
(!!!) (BEST VALUE) 6V4=EZ80 Haltron East Germany NOS 1970's (60/40 and 60/40)
(!!!) (BEST VALUE) 6V4=EZ80 Teonex East Germany NOS 1970's (58/40 and 59/40)
(!!!) (Best Value) 6X5GT=VT-126B RCA black plates NOS 1943 (48/40 and 48/40) (Best Sound)
(!!!) (Best Value) EZ80=6V4 Tronal by Tesla NOS 1970's (62/40 and 62/40) 1% section balance
(!!!) (Best Value) JAN-CHY-5Y3WGTA CBS Hytron triple mica D getter like new 1955 (52/40 and 57/40)
(!!!) (Good Value) 5V4G=CV729 Brimar UK gray plates "D" getter halo 1950's used/good (59/40 and 65/40)
(!!!) (Good Value) 83 RCA low hours/tests like new 1940's (60/40 and 60/40) 1% section balance
(!!!) (READ REVIEW) 5V4G RCA branded GE NOS 1958 (60/40 and 60/40)
(!!!) (Recommended Pair) 5Y3GT Philips Holland NOS 1960's (61-68/40 and 60-68/40)
(!!!) (Recommended Pair) 866A GE NOS 1971 (54/60 and 54/60)
(!!!) (Recommended Pair) 866A GE NOS 1971 graphite lifted off top plate (56/40 and 57/40)
(!!!) (Recommended Single) EZ80 Pope France NOS "O" getter halo 1970 (62/40 and 62/40) 1% section balance