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0B2 Hytron NOS 1960's (argon)
0B2 Sylvania branded GE 1960's (neon gas) (1 in stock)
6BM8 Philips Miniwatt by Valvo Germany used 1961
6SH7 Rauland by RCA metal can NOS 1955 (11ma)
6SH7 RCA metal can NOS (10.3ma)
6SH7 RCA metal can NOS 1955 (10.2ma)
6X4 Allied by Matsushita Japan NOS 1960's (58/40 and 58/40) 1% section balance
6X4 Arcturus by GE NOS "D" getter 1960 (54/40 and 54/40)
6X4 GE Beckman like new "D" getter 1962 (54/40 and 52/40)
6X4 GE like new 1950's "D" getter (54/40 and 54/40)
6X4 IEC Electron Japan used/tests like new 1960's (60/40 and 62/40)
6X4 International by Matsushita Japan NOS 1960's (55/40 and 56/40)
6X4 National Union "D" getter halo tests like new 1955 (56/40 and 58/40)
6X4 National Union used/good 1951 (55/40 and 56/40)
6X4 RCA "O" getter used/good 1960's (44/40 and 49/40)
6X4 Sylvania D getter used/tests like new 1958 (58/40 and 60/40)
6X4WA GE black plates rebranded National NOS (55/40 and 56/40)
6X4WA GE used/tests like new 1960 era no printing (54/40 and 54/40)
6X5GT GE used/good 1958 (48/40 and 50/40)
6X5GT GE used/good 1960 (47/40 and 48/40)
