(!!!!) (Best Value Single) 6AS7G RCA gray plates NOS 1971 (60ma/78ma)
(!!!!) (Recommended PAIR) 5998A Sylvania JAN NOS 1980 (144/131ma and 138/144ma) (5998A=7236)
(!!!) (BEST PAIR) 5998A Sylvania JAN NOS 1980 (115/114ma and 116/114ma) (5998A=7236) 1-3% matched
(!!!) (BEST PAIR) 5998A Sylvania JAN NOS 1980 (122/127ma and 123/126ma) (5998A=7236)
(!!!) (BEST PAIR) 5998A Sylvania JAN NOS 1980 (124/126ma and 126/122ma) (5998A=7236)
(!!!) (BEST PAIR) 5998A Sylvania JAN NOS 1980 (136/132ma and 134/132ma) (5998A=7236)
(!!!) (Best Single) 5998A Sylvania JAN NOS 1980 (130/134mA)
(!!!) (Best Single) 5998A Sylvania JAN NOS 1980 (135/139mA)
(!!!) (Best Single) 5998A Sylvania JAN NOS 1980 (141/137mA)
(!!!) (Best Single) 5998A Sylvania JAN NOS 1980 (143/141mA)
(!!!) (Recommended Single) 5998A Sylvania JAN NOS 1980 (112/119mA)
(!!!) (Recommended Single) 5998A Sylvania JAN NOS 1980 (115/111mA)
(!!!) (Recommended Single) 5998A Sylvania JAN NOS 1980 (124/130mA)
(!!) (BEST SINGLE) 6AS7GA Sylvania metal base NOS 1960's (103/106ma)
(!!) (BEST SINGLE) 6AS7GA Sylvania metal base NOS 1960's (107/111ma)
(!!) (BEST SINGLE) 6AS7GA Sylvania metal base NOS 1960's (84/90ma)
(!!) 6AS7G Russian branded National NOS 1990's (50ma/86ma)
(!!) 6AS7G Russian branded National NOS 1990's (51ma/77ma)
(!!) 6AS7G Russian branded National NOS 1990's (62ma/65ma)
(!) (Best Single) 6AS7GA RCA black plates NOS 1972 (114ma and 127ma)
