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6SD7GT Ken Rad NOS 1940's (11ma)
6SD7GT Raytheon NOS 1940's (11ma)
14A7 Sylvania used/good 1947 (96/60)
(!!) 5751 Sylvania misbranded 12AX7WA NOS 1960's (1.9/1.9ma)
7A4=XXL GE NOS 1949 (102/50)
5879 RCA branded Raytheon chrome shield NOS 1970's (1.7ma)
(!!!!) 56 Arcturus Blue Balloon engraved base tests like new 1930's (5.0ma)
5879 RCA triple mica "D" getter NOS 1957 (1.4ma)
37 Raytheon NOS 1946 (7.3ma) (Highest mA)
37 Sylvania branded Raytheon NOS 1948 (7.0ma)
(!) (Best Single) 37 GE ribbed plate NOS 1943 (8.0ma)
(!) Recommended Pair) 37 RCA branded GE NOS 1946 and RCA like new 1930's (7.3ma and 8.3ma)
37 RCA branded Philco used/good 1940's (6.4ma)
(!!!!) (Single) 12AX7 RCA Motorola black plates "D" getter used/good 1956 (0.9/1.0ma)
(!!!!) (Slightly microhonic Single) 5751 RCA Hewlett Packard black plates NOS 1968 (2.4/2.6ma)
(!!!!) (Best Value Single) ECC83=12AX7 Telefunken Germany <> bottom ribbed plates branded GAP/R Computor tube used/good 1956 (Gm=1400/1500 and 0.8/0.9ma) 1-5% section balance
(!!!!) (Best Value Pair #1) 12AX7A RCA gray ribbed plates NOS 1967-1973 (best tone) (0.9/0.9ma and 0.9/1.1ma) (Fender)
(!!!!) (PAIR) 5751 Hitachi Japan glossy black ribbed plates triple mica double D getters 1960's (2.0/2.2ma and 1.8/2.2ma) (rare)
7A4=XXL Sylvania branded Philco NOS (1 in stock) (Hallicrafters)
(!) (Pair) 37 Philco engraved base 1930's used/test strong (6.8ma and 7.6ma)
