(!!!!) (BEST PAIR) 408A Western Electric NOS 1976 and 1984 (91/60 and 91/60)
(!!!!) (Best Pair) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's (6.4ma and 6.5ma) (Highest Ma and Gm)
(!!!!) (Best Pair) 6BQ7A RCA black plates NOS 1967 same date codes (15/14.5ma and 13.5/16.5ma)
(!!!!) (BEST PAIR) 6DN7 GE branded GE and CBS NOS 1959 same build (46.4/46.5ma and 8/9ma)
(!!!!) (Best Pair) 6DN7 RCA NOS 1960's (30ma/9.6ma and 34ma/8.5ma)
(!!!!) (Best Pair) 6JB6A RCA NOS 1976 same date codes (60ma and 62ma) (close Gm) (DRAKE)
(!!!!) (Best Pair) 6N7 GE metal can NOS 1954-1955 (3.3/3.1ma and 3.1/3.1ma) 1-2% matched
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1953 (1.1ma and 1.2ma)
(!!!!) (Best Pair) CEA-5993 Bendix NOS 1950's (52/40 x 4 sections)
(!!!!) (Best Pair) ECC84=6CW7 Ultron East Germany by RFT 1970's 1-2% matched (10.2/10.4ma and 10.2/10.6ma)
(!!!!) (Best Price) 6AU8 Sylvania NOS (4 for $9.99)
(!!!!) (Best Price) 6AU8A RCA NOS (4 for $9.99)
(!!!!) (Best Siemens Pair) 12AT7=ECC81 Siemens Halske Germany branded "SATOR" NOS 1964 (9.0/9.3ma and 9.2/10ma) (close Gm)
(!!!!) (Best Siemens Single 1972) E83CC=12AX7 Siemens Halske NOS triple mica made 1972 printed 1976 (1.2/1.2ma) (Gm=1700/1700) 1% section balance
(!!!!) (Best Siemens Single) CV492=ECC83=12AX7 Siemens Halske NOS 1968 1% section balance (1.4/1.4ma) (Gm=1800/1600) (phono, mic, preamp)
(!!!!) (BEST SINGLE) 12AX7A=ECC83 Matsushita Japan NOS rebranded Raytheon NOS 1970 era (Gm=1800/1800 and 1.5/1.3ma) (similar to Mullard)
(!!!!) (Best Single) 12SN7GTA Sylvania branded GE NOS 1960's (11.0/11.4ma) (same Gm)
(!!!!) (Best Single) 280 Silvertone like new 1930 era (51/40 and 54/40)
(!!!!) (Best Single) 5751 Siemens Halske Germany triple mica NOS 1966 (2.6/3.0ma)
(!!!!) (Best Single) ECC82=12AU7 Telefunken Diamond Bottom ribbed plates like new 1960 (10.6/10.2ma) (same Gm)
