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12R5 NOS (3 in stock)
12S8GT NOS (3 in stock)
12SA7GT Auburn USA NOS 1960 (3.8ma) strong single
12SA7GT Raytheon used/good (1 in stock)
12SA7Y RCA brown bottom NOS 1955 (4.7ma)
12SC7 International Canada NOS, probably made by GE (2.0/2.1ma)
12SC7 International Canada NOS, probably made by GE (2.3/2.8ma)
12SC7 Philco NOS 1940's (1.8/1.8ma) 1% section balance
12SC7 Philco NOS 1940's (1.8/2.1ma)
12SF5 US Brands NOS (5 in stock)
12SF5GT NOS (1 in stock)
12SF7 US Brands NOS (8 in stock)
12SG7 US Brands metal can used (10 in stock)
12SH7 US Brands NOS (12 in stock)
12SJ7 RCA NOS 1961 (3.0ma)
12SK7GT Tungsol used/tests like new 1940's, 50% of base is rusted/tarnished (8.6ma)
12SK7GT Wizard by Sylvania used/good 1940's (7.5ma)
12SL7GT GE branded RCA NOS 1970's (2.2/2.4ma)
12SL7GT GE NOS 1966 (2.0/2.3ma)
12SN7GT RCA branded CHIEF NOS 1963 (8/9.2ma)