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(slightly microphonic tube) 12AU7A RCA tall black ribbed plates "D" getter halo used/good 1950's (8.2/8.8ma)
6F8G GE parallel plates NOS 1940's (8.0ma and 8.4ma)
6AW8A Sylvania NOS 1960's with special silver oxide coating (2.4/21.5ma)
6X5GT Ken Rad 1940's used/good (51/40 and 53/40) (RCA construction)
6BL4 RCA NOS 1950's
874=US Navy CRC 38274 RCA Radiotron Balloon tests like new 1930's
(!!) (BEST SINGLE) 6DN7 GE branded RCA NOS 1960's (64ma and 7.2ma)
12AL5 RCA NOS (25 in stock)
6F5 RCA metal can NOS 1950's (1.0ma Gm=1500)
12SJ7 RCA metal can NOS 1950's (2.8ma)
(!) (BEST PAIR) 5727=2D21 RCA NOS 1958 (1 pair)
6CB5A RCA NOS faded 1970 (113ma)
1P28B RCA Photocell NOS (4 in stock)
(!!!) (PAIR) 5998A Sylvania JAN NOS 1980 (118/131ma and 121/130ma) (5998A=7236) 1-3% matched
(!!) (Best Pair #2) 6GM5 Sylvania branded RCA NOS (52ma and 52ma)
6AC7 US Brands used/good (40 in stock)
(PAIR) 874 RCA test like new 1940's (1 pair)
6DQ5 RCA NOS 1970 (99ma)
JAN-CAHG-6H6WGT Chatham NOS 1959
(!!!) (SINGLE) 12AU7 RCA tall black plates "D" getter used/good 1950's (9.8/8.2ma)
