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(!) 203A Sylvania brass base tests like new 1930's
(!) 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 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)
(!) 6F6G Sylvania coated glass used/good 1940's (36.8ma)
(!) 6L6Y RCA metal can (Y=brown bottom) NOS 1955 (78.8ma)
(!) 80 Delco by Sylvania ST-shape used/tests like new 1947 rattle inside base (57/40 and 60/40)
(!) 80 Hygrade Sylvania experimental tube used/strong 1940 era (54/40 and 52/40)
(!) 80 Ken Rad ST-shape tests like new mid-1940's (52/40 and 54/40)
(!) 80 National Union NOS 1950 era (54/40 and 58/40)
(!) 80 Tungsol ST-shape tests like new 1940's (54/40 and 56/40)
(!) 80 Tungsol ST-shape tests like new 1940's (57/40 and 60/40)
(!) 80 Tungsol ST-shape used/good 1946 (52/40 and 54/40)
(!) 810 RCA black plate used/tests like new 1940's reboxed - large getter
(!) 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)
(!) Best Single) 6R7G GE NOS 1945 era (110/60)
(!) VT-80 Sylvania used/strong 1940's (58/40 and 60/40)
