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(!!) (SINGLE) 6BM8=ECL82 Valvo Holland used/good 1960 (1.9ma/34ma)
(!!) (Recommeded Pair) 6BX7GT GE branded NOS "D" getter 1958 - 1 tube branded RCA (72ma/95ma and 92/87ma) (highest mA and Gm)
(!!) 6BX7GT Sylvania black plates NOS 1960's (56ma/76ma)
(!!) 6BX7GT Sylvania branded GE black plates 1967 (44ma/61ma)
(!!) (Recommended Pair) 6EU7 GE NOS 1970-1978 (44-48/32 and 43-48/32)
(!!) 6SN7GT RCA used/good 1953 (6.6/7.6ma)
(!!) 6SN7GTB Tungsol black plates tall bottle "U" getter used/75% 1950's (6.2/6.0ma)
(!!) 6SN7GTA RCA branded CAPEHART used/like new 1955 (8.4/9.8ma)
(!!) 6SN7GTB Realistic JAPAN NOS tall gray ribbed plates 1960's (8/8.2ma)
(!!) 6SN7GTB Sylvania used/75% 1960's (6.0/6.4ma)
(!!) 6U8=ECF82 Tungsram Hungary rebranded Haltron NOS 1970's (14.3ma and 7.6ma)
(!!) 7693=E90F=6BH6 Philips Holland PQ NOS 1964 (6.4ma)
(!!) (Best Single) 7N7 Sylvania branded Philco NOS parallel black plates 1940's (7.5/7.9ma)
(!!) C-327 Cunningham Balloon short mesh-plate used/very good 1930 (5.7ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1968 partially faded printing (7.8/10.4ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1975 (9.6/14.4ma)
(!!) CV4024=12AT7WA Brimar NOS square black plates 1976 (7.6/8.2ma)
(!!) CV4024=12AT7WA=12AT7 Brimar UK NOS square black plates 1962 (8.6/13.6ma)
(!!) E180CC=7062 Philips Miniwatt IBM Holland low hours/tests good O getter halo 1961 (6.0/6.2ma)
(!!) (Best Value Single) ECL82=6BM8 RCA Mexico NOS 1970's (2.1ma/28ma)