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337A WE "large punch" NOS 1966 slightly tilted glass (single)
37 Raytheon NOS 1946 (7.3ma) (Highest mA)
37 RCA branded Philco used/good 1940's (6.4ma)
37 Sylvania branded Raytheon NOS 1948 (7.0ma)
38 Sylvania NOS 1940's (8 in stock)
38 US Brands NOS (17 in stock)
38233=2C21 Raytheon ceramic base NOS 1930's
38233=2C21 Raytheon ceramic base NOS 1940's
38HE7=38HK7 GE NOS
39/44 US Brands NOS (18 in stock) ($1.99 each minimum 3 purchased)
3A8GT US Brands NOS (0 in stock)
3B7=VT-182=1291 Sylvania used/very good 1940's
3B7=VT-182=1291 Sylvania used/very good 1944
3BN4 NOS (2 in stock)
3C4=DL96 Sonotone England NOS 1960's (5 in stock)
3LF4 Sylvania used/good (82/60)
3Q5GT Ken Rad NOS 1940's (1 in stock)
3Q5GT Philco used/tests like new 1940's (96/60)
3Q5GT=VT-221 Ken Rad used/tests like new 1940's (106/60)
3Q5GT=VT-221 Tungsol used/tests like new 1940's (105/60)
