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(!!) (Best Single) 12BH7A Westinghouse Canada ribbed plates NOS 1967 (12.2/14.2ma)
(!!) (Best Single) 12BY7A Tungsol NOS 1960 era (29.5ma)
(!!) (Best Single) 13EM7 RCA coin-base black plates NOS 1970's (2.7/47.2ma)
(!!) (Best Single) 26 Deforest Audion balloon tests like new 1920's (8.3ma, Gm=1300)
(!!) (Best Single) 5687 Tungsol rebranded CBS black plates "U" getter NOS 1950's (38/48ma)
(!!) (Best Single) 5920=E90CC Amperex PQ Holland 1968 (8.0/8.4ma)
(!!) (Best Single) 5965 Sylvania NOS 1960's (21/19ma)
(!!) (Best Single) 5AS4A RCA NOS 1958 (58/40 and 58/40)
(!!) (Best Single) 5AS4A RCA NOS 1964 slightly tilted glass (56/40 and 56/40)
(!!) (Best Single) 5Y3GT Tungsol NOS 1956 (60/40 and 56/40)
(!!) (Best Single) 6080WA RCA NOS 1975 (95ma/114ma)
(!!) (Best Single) 6146B RCA branded GE NOS 1973 (102ma)
(!!) (Best Single) 6550 Tungsol gray plate with vent holes NOS 1966 (163ma)
(!!) (Best Single) 6AH4GT Sylvania branded Hytron "D" getter NOS 1954 (48ma) (Highest mA and Gm)
(!!) (Best Single) 6AN8A RCA NOS 1960's (15.6/16.5ma)
(!!) (Best Single) 6AN8A RCA NOS 1968 (16.8/16.6ma)
(!!) (Best Single) 6AN8A Sylvania branded National U getter NOS 1960 era (18/16.2ma)
(!!) (Best Single) 6AQ5A GE NOS 1963 (51.5ma)
(!!) (BEST SINGLE) 6BL7GTA Tungsol NOS 1960 era (43/44ma)
(!!) (Best Single) 6BQ5 RCA NOS 1959 (54.5ma)