(!!!) (Sylvania Pair #2) 5U4GB Sylvania NOS 1970's (60-62/40 and 60-62/40)
(!!!) 5U4GB GE NOS 1971 (58/40 and 61/40)
(!!) (Recommended Single) 5U4GA GE "D" getter NOS 1955 (57/40 and 59/50)
(!!) 5U4GB RCA NOS 1970 some white oxide flakes inside tube (55/40 and 55/40)
(!!) 5U4GB RCA used/good "D" getter 1960 a few scratches on base (53/40 and 57/40)
(!) 5U4G Sylvania rebranded Motorola used/good 1951 (48/40 and 52/40)
(!) 5U4G Windsor by Sylvania used/good 1947 faded getter (54/40 and 56/40)
(Recommended Single) 5U4GA GE "D" getter NOS 1955 slightly tilted glass (58/40 and 59/50)
5931 Sylvania triple mica "D" getter used/tests like new 1955 in white box (56/40 and 56/40)
5U4G Crosley Sylvania used/good 1950 (55/40 and 56/40) stains at top from usage
5U4G RCA used/good 1953 a few oxide flakes inside tube (50/40 and 52/40)
5U4GB Channel Master Japan 1960 double "D" getter halos low hours/tests like new (65/40 and 68/40)
5U4GB GE ITT NOS 1960's "D" getter (60/40 and 62/40)
5U4GB Hitachi Japan NOS branded Marconi 1960's a few very small vertical scratches on base (57/40 and 58/40)
5U4GB Raytheon used/good 1960 era (54/40 and 54/40)
5U4GB RCA BALDWIN used/good 1962 glass slightly tilted in base (53/40 and 53/40)
5U4GB RCA Motorola used/good 1962 (54/40 and 55/40)
5U4GB RCA used/good 1950's slightly tilted glass (55/40 and 56/40)
5U4GB RCA used/good 1968 (56/40 and 57/40)
5U4GB Sylvania Canada NOS 1960's (61/40 and 64/40) (similar build to RCA)
