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36AM3B US Brands and Japan NOS (18 in stock)
39 Ken Rad engraved base NOS 1930's
39/44 US Brands NOS (18 in stock) ($1.99 each minimum 3 purchased)
39/44 used/good (10 in stock)
39A Arcturus Blue Balloon used/good tilted top cap 1930's
3B28 Continental Electronics used/test like new 1940's (76/40)
3B28 RCA NOS 1955 (80/40)
3B28 RCA NOS 1972 (79/40)
3B28 RCA tests like new some scratches on base 1955 (78/40)
3C23 Marshall 1965 probably by RCA in Marshall box
3C23 RCA NOS Thyratron 1950's rebranded NL-3C23 National
3C23 RCA NOS Thyratron 1974
3C45=6130 Hydrogen Thyratron NOS (0 in stock)
3C45=6130 Kuthe Labs Hydrogen Thyratron NOS 1951
3DG4 RCA NOS original boxes (2 in stock) (full-wave rectifier)
3DG4 RCA NOS slightly tilted glass (82/60 and 82/60)
3E29=829B Ken Rad NOS 1940's (1 tube only - no pairs)
3S4 Philco and Raytheon NOS same build 1940's - 1951 (1 Pair)
3S4 RCA branded CBS NOS 1961 (98/60)
3S4 RCA NOS 1951 (100/60)
