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(!) 247=47 RCA Balloon used/60-65% 1930's (20ma)
(!) 247=47 Tungsol Balloon used/good 1930's (23.2ma)
(!) 31 Ken Rad NOS engraved base 1940 era (11ma)
(!) 31 Tungsol NOS 1940's (11.8ma)
(!) 47 Raytheon engraved base box plate used/good 1930's (25.2ma Gm=1940)
(!) 47 RCA Radiotron Balloon used/good 1930's (23.4ma)
(!) 47 RCA Radiotron engraved base used/good 1930's (27.5ma Gm=2250)
(!) 47 Tungsol Aristocrat low hours/tests like new 1940's (38ma Gm=2770) (highest mA and Gm)
(!) 5C22 ITT Electron Tube Division low hours/good condition 1967 some scratches on the base
(!) 6DQ6B RCA NOS 1970's (75ma)
(!) 6F6G Sylvania coated glass used/good 1940's (36.8ma)
(!) 6JS6C GE branded RCA NOS 1970's (55ma)
(!) 6L6Y RCA metal can (Y=brown bottom) NOS 1955 (78.8ma)
(!) 6L6Y RCA metal can (Y=brown bottom) NOS 1964 (72ma)
(!) 6L6Y RCA metal can (Y=brown bottom) NOS 1966 (77ma)
(!) 6ZY5G Philco NOS 1940's (50/40 and 54/40)
(!) 802 GE NOS 1950 (1 in stock)
(!) 807 GE Italy gray plate NOS 1967 same build as UK made (80ma)
(!) 814=VT-154 GE brown base like new 1940's (108ma)
(!) 814=VT-154 GE brown base like new 1940's (118ma) (Highest mA and Gm)
