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(!!!) (Good Value Pair) 6350 Sylvania black ribbed plates "U" getter used/good 1957 (9.6/9.3ma and 9.5/9.8ma) 1-3% matched (same Gm)
$59.00
$69.99
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(!!!) (BEST PAIR) EF184 Mullard branded Philips NOS 1965 (10.8ma and 11.2ma) 1-3% matched
$59.00
$69.99
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(!!!) (Best Single 1950's) 5687 Tungsol black plates "U" getter used/tests like new 1950's (36/39ma)
$59.00
$69.99
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EF804 Telefunken Germany NOS 1960's (2.9ma)
$59.00
$69.99
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(!!!!!) (Best Value Pair) 6SN7GTB GE NOS 1964-1965 same build (6.4/7.0ma and 6.6/7.6ma)
$59.00
$69.99
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(!!!!) (Best Single) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1952 (8.8/7.8ma)
$59.00
$69.99
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(!!!) 6SN7GT Raytheon parallel plates NOS 1953 (8.5/10ma)
$59.00
$69.99
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(!!!) (Recommended Single 1963) JG-5751 GE double mica gray plates NOS 1963 (2.2/2.4ma)
$59.00
$69.99
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(!!!!) (Best Single) 6SN7GTA GE NOS "U" getter halo - side getter - copper grid posts 1952 (9.3/11ma)
$59.00
$69.99
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(!!!) (Good Value Pair) JHS-5687WA Sylvania used/very good 1960's faded printing (35.4/34.2ma and 37.0/36.5ma)
$59.00
$69.99
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(!!!!) (Good Value Single 1970) PCC88=7DJ8 Amperex Holland "A" frame NOS 1970 (11.4/12ma)
$59.00
$69.99
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(!!!) (PAIR) UX-201-A Radiotron Balloon used/good brass pins 1930's (2.3ma and Gm=700 x 2 tubes)
$59.00
$69.99
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(!!!) (slightly microphonic) 6922=E88CC Tesla Czech Republic NOS 1970 (22/21ma)
$59.00
$69.99
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(!!!!) (Best Single) 12AT7=ECC81 Mullard UK NOS 1972 (10.4/10.2ma)
$59.00
$69.99
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(!!!) (BEST SINGLE) JAN-6922 Sylvania NOS 1971 (15/18.4ma)
$59.00
$69.99
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(!!!) (Recommended Single) EC92=6AB4 Siemens Halske NOS 1967 (9.2ma)
$59.00
$69.99
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(!!) (BEST PAIR) 6BM8 Sylvania NOS 1970's (1.8/45ma and 1.7/49ma)
$59.00
$69.99
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(!!) 7199 RCA Black Plates NOS around 1960 era (9/7.8ma)
$59.00
$69.99
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(!!!!) (Best Value Single) E88CC=6922 Mullard SQ Holland used/good 1966 (11.0/11.4ma) (3D MIDS, low noise, sweet sound) (same Gm)
$59.00
$69.99
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(!!!) (Good Value) 12AX7A/7025 GE NOS pinched plates 1976 (0.9/1.7ma and Gm=1500/2000)
$59.00
$69.99
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E88CC=6922 Siemens Halske Germany "gray shield" Gold Pins used/good 1963 (10.6/12.2ma)
$59.00
$69.99
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(!!!) (Recommended Single) PCC88=7DJ8 Siemens Germany NOS 1972 (11.5/12.2ma)
$59.00
$69.99
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(!!!) (Best Value Pair) 6SN7GTB RCA coin-base black plates 1970-1975 (8/10ma and 9.8/8ma)
$59.00
$69.99
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(!!) (Best Value Single) 7199 Sylvania branded GE NOS 1966 (10ma/8.6ma)
$59.00
$69.99
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