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(!!) (SINGLE) 6U5 RCA NOS Tuning Eye 1976 bright eye
(!!) (slightly microphonic) 6SL7GT RCA NOS black plates gray coated glass 1952 (2.8/2.8ma) 1% section balance
(!!) 5Z3G Westinghouse NOS 1957 (59/40 and 61/40)
(!) (1 PAIR) 0D3 Tungsol used/test like new 1950's (argon)
(!) (Best Single #1) JHY-6AK5 Hytron black plate NOS 1952 (9.2ma)
(!) (Best Single) JHY-6AK5 Hytron black plate NOS 1952 (8.1ma)
(!) (Single) JHY-6AK5 Hytron black plate NOS 1952 (6.8ma)
(!) 244A Western Electric NOS 1952 smaller side getter (4.4ma)
(!) 6F6GT GE Coronado NOS 1956 (36.8ma)
(slightly microphonic) 6SN7GTA GE NOS 1952 copper grid posts (7.4/10ma)
0A3 GE NOS 1963 slightly tilted glass (neon)
2050 GE burgundy base NOS 1952 (Seeburg)
2050 Raytheon NOS 1940's (Seeburg)
2050 Westinghouse NOS 1963 (Seeburg)
5719 Sylvania Gold Brand NOS 1952 (similar to 6AD4) (4 in stock)
5Y4G RCA used/good 1948 (48/40 and 53/40)
5Y4GA RCA NOS 1963 (54/40 and 57/40)
5Y4GA RCA NOS 1971 (54/40 and 60/40)
5Y4GA Sylvania branded Zenith NOS 1960's (54/40 and 57/40)
5Y4GA Sylvania NOS 1960's (53/40 and 58/40)