(!) (slightly microphonic) 5751 Sylvania rebranded RCA black plates triple mica "D" getter used/good 1950's (2.0ma/2.2ma)
(!) (slightly microphonic) JAN-CRC-6SL7GT RCA NOS black plates 1951 tilted glass (2.0/2.2ma)
(!) (~ Best AZ50 Pair ~) AZ50 Miniwatt Dario France NOS 1954 (rare pair)
(!) 0B2=108C1 Valvo Germany like new in white boxes 1960 era (neon gas)
(!) 12AT7 RCA black plates NOS D getter halo 1950's, slightly microphonic (13/16.4ma) (high Ma and Gm)
(!) 12BH7A GE gray oval plates "O" getter halo used/good 1964 (7.2ma/8.5ma)
(!) 6F6G Sylvania Philco NOS 1949 (36.5ma)
(!) 6L6Y RCA metal can (Y=brown bottom) NOS 1955 (78.8ma)
(!) 6SL7GT RCA burgundy base NOS 1951 (1.7/1.8ma)
(!) JAN-6384 Tungsol NOS 1972 (72ma)
(!) JAN-CLRV-6SN7WGTA GE Canada brown base NOS 1970 (7/10ma)
(!) JG-12AT7WA=6201 GE black plates triple mica "U" getter used/strong 1955 (10ma/15ma)
(!) JHS-0A2WA Sylvania used/test like new 1966 (1 pair)
(1 set of 4) 6F7G RCA NOS 1950's (set of 4)
(Best Price) 6F7G US Brands NOS 1950's (10 for $39.99)
(Best Price) 6X5GT=VT-126B RCA black plates NOS 1943-1945 era (10 in stock)
(BEST PRICE) 7C5 US Brands used/good mostly 1950's (4 tubes for $16.99)
(BEST PRICE) EM1 Philips Austria NOS 1956 (bright green eyes) (4 tubes for $379.99)
(Best Single) ECC34 Mullard NOS 1950's (10.1ma/10.2ma)
(Best Value) 5V4G RCA black plates used/very good 1948 (54/40 and 57/40)
