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(slightly microphonic tube) 12AT7WA=CV455 Mullard NOS "curved D getter halo" copper grid posts 1959 perfect printing (8/9ma)
(slightly microphonic tube) ECC81=12AT7 Mullard NOS "curved D getter halo" copper grid posts 1955 (9.2/10.6ma)
(slightly microphonic tube) JRP-5687 Raytheon NOS black plates D getter NOS 1956 (40.5/45.5ma)
(slightly microphonic tube) JRP-5687 Raytheon NOS black plates D getter NOS 1957 (34.5/36.5ma)
(sold out) 349A Western Electric
(sold out) EL50 Philips Miniwatt NOS 1958) (EL50 replaces 4654)
0A2WA RCA NOS 1956-1971 (10 in stock)
0A3 GE NOS 1963 slightly tilted glass (neon)
0A3 US Brands used/good (4 in stock)
0B2 RCA low hours/test like new 1960's - 1970's (4 in stock)
0B2 Tungsol used/good 1960's (argon)
12AT7 Holland branded CBS Hytron NOS large "D" getter halo 1954 (8.4/10.0ma)
12AT7 RCA Black Plates "D" getter used/good mid-1950's
12BA6 Brimar BVA England used/good 1960's (9.2ma)
12BA6 Sylvania NOS 1960's (11ma)
12BA6 Westinghouse NOS 1951 (10.4ma)
12SN7GT RCA NOS 1960 with plate support rods (8.0/8.2ma) 1-2% section balance
12SN7GTA GE NOS 1959 (7.2/7.0ma)
12SN7GTA GE NOS 1970 era (8.2/7.4ma)
12SN7GTA GE NOS 1974 (10/9.4ma)
