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(!) (Best Pair) 6FY5=EC97 International Servicemaster NOS made in JAPAN (23ma and 23.4ma)
(!) (BEST SINGLE) 6CJ3=6DW4B Sylvania branded Philips tipped top NOS (88/60)
(!) (Best Single) 6GK5=6FQ5A Sylvania branded Raytheon NOS (15.2ma)
(!) (Best Single) 7247=12DW7 Amperex Globe Logo by Matsushita Japan NOS 1967 similar sound to Mullard (1.5ma and 11.6ma) (High mA and Gm)
(!) (Good Value Pair) 6DW4B Raytheon Japan like new and Westinghouse NOS 1960's (82-83/60)
(!) (Good Value) 12AX7WXT Sovtek NOS 1990's (Gm=1500/1400 and 0.9/0.8ma)
(!) (Japan) 6DJ8=M3624 Toshiba Japan used/good 1960's (10.5/16ma)
(!) (PAIR) 12HG7=12GN7A Sylvania branded RCA coated glass NOS (37ma and 40ma)
(!) (READ REVIEW) GZ34 Raytheon Japan by Matsushita NOS similar sound and build to Mullard NOS 1970's (59/40 and 59/40 x 2 tubes)
(!) (Recommended Pair) EL36 Haltron Japan clear top NOS 1960's (86ma and 93ma)
(!) (slightly microphonic single) 12AU7 Hitachi JAPAN branded IEC Mullard NOS ribbed plates 1968 (9.4/11ma)
(!) 12AU7A Hitachi JAPAN branded Realistic Lifetime NOS ribbed plates 1960 era (9.2/12.2ma)
(!) 12BH7A Toshiba rebranded "Bell and Howell Schools" like new 1960's (9/10.4ma)
(!) 12HG7=12GN7A GE USA NOS (52ma and 56ma)
(!) 12HG7=12GN7A GE USA NOS (62ma and 66ma)
(!) 12HG7=12GN7A GE USA NOS (71ma and 68ma)
(Best Value Single) 6BQ5 Hitachi Japan used/tests like new 1960's (44.5ma)
(BEST VALUE) 6LQ6 Sylvania branded RCA low hours/like new 1970 era (104ma)
(PAIR) 6AX4GT RCA used/very good (54/40 and 54/40)
(PAIR) 6ER5 RCA NOS 1960's - 1970's (9.5ma and 9.2ma)