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57 Cunningham used/tests like new 1930's (45/31)
57 Raytheon used/tests like new 1930's (46/31)
57 US Brands used/good 1930's - 1940's (6 in stock)
58 Ken Rad used/good 1930's (48/36)
58 National Union NOS 1950 era (58/36)
58 National Union NOS 1952 (64/36)
58 Raytheon 4-Pillar used/tests like new (62/36)
58 Raytheon used/good 1940's (52/36)
58 RCA Cunningham used/good 1940's (62/36)
58 RCA NOS 1940's (68/36)
58 US Brands used/good (6 in stock)
60FX5 US Brands NOS (5 in stock)
6C6 Cunningham Radiotron used/good 1930's (42/31)
6C6 Raytheon used/tests like new 1930's hairline crack in base (2.1ma)
6D6 National Union used/tests like new 1930's (66/40)
6D6 Raytheon used/good 1930's (62/40)
6D6 US Brands used/good (2 for $8)
75=VT-75 Ken Rad Dual-Diode Triode used/good 1930's (26/19)
75=VT-75 RCA Dual-Diode Triode NOS 1948 (36/19)
75=VT-75 Sylvania Dual-Diode Triode used/good glass chip inside tube 1930's (26/19)
