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12K8=12K8Y NOS (20 in stock)
12L6GT US Brands NOS (20 in stock)
12MD8 NOS (10 in stock)
12NO30 Amperite Time Delay Relay (2 in stock)
12NO5T Amperite Time Delay Relay (0 in stock)
12Q7G National Union NOS (38/20)
12Q7G Zenith by Sylvania NOS 1946-1947 (36/20)
12Q7GT Dumont used/good (34/20)
12Q7GT Philco used/good (35/20)
12Q7GT RCA used/strong (42/20)
12R5 NOS (3 in stock)
12S8GT NOS (3 in stock)
12SA7GT Auburn USA NOS 1960 (3.8ma) strong single
12SA7GT Mullard Holland used/good 1960 (3.8ma)
12SA7GT Nat. Union branded FORD MOTOR CO. used/strong 1940's (4.2ma Gm=1200)
12SA7GT Raytheon used/good (1 in stock)
12SA7GT Sylvania used/tests like new 1957 (3.3ma Gm=1100)
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)
