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(!!!!!) (Best Value Pair) ECC83=12AX7 Philips Miniwatt Holland used/tests like new 1968-1970 (1.2/1.3ma and 1.4/1.1ma) 1-3% matched

(!!!!!) (Best Value Pair) ECC83=12AX7 Philips Miniwatt Holland used/tests like new 1968-1970 (1.2/1.3ma and 1.4/1.1ma) 1-3% matched

$ 249.99
(!!!!) (3rd Best Pair 1960) 12AX7 Westinghouse NOS gray pinched plates

(!!!!) (3rd Best Pair 1960) 12AX7 Westinghouse NOS gray pinched plates "D" getter 1960 faded printing (1.0/1.0ma and 1.2/0.9ma) 1-5% matched

$ 139.99
(!!!!) (Best Single #1) 2C51=5670 Sylvania NOS 1970's (9.2/9.0ma) 1-3% section balance

(!!!!) (Best Single #1) 2C51=5670 Sylvania NOS 1970's (9.2/9.0ma) 1-3% section balance

$ 39.99
(!!!!) (Best Single 1958) 6922 Amperex Holland curved

(!!!!) (Best Single 1958) 6922 Amperex Holland curved "D" getter 1958 NOS (16.2/17.8ma) (same sonics as pinched waist version)

$ 299.99
(!!!!) (Best Single 1960) 12AX7 Westinghouse NOS gray pinched plates

(!!!!) (Best Single 1960) 12AX7 Westinghouse NOS gray pinched plates "D" getter 1960 era (Gm=1600/1800 and 1.2/1.5ma)

$ 99.99
(!!!!) (Good Value Single 1964) PCC88=7DJ8 Philips Miniwatt Holland

(!!!!) (Good Value Single 1964) PCC88=7DJ8 Philips Miniwatt Holland "O" getter NOS 1964 (10.5/16.2ma)

$ 59.99
(!!!!) (Slightly microphonic) ECC83=12AX7 Amperex Bugle Boy Holland

(!!!!) (Slightly microphonic) ECC83=12AX7 Amperex Bugle Boy Holland "long plates" and "D" getter tests like new 1958 (1.2/1.3ma and Gm=1700/1700) 1-3% section balance

$ 249.99
(!!!) (#1 6BX7GT RCA single) 6BX7GT RCA NOS 1961 (41/48ma)

(!!!) (#1 6BX7GT RCA single) 6BX7GT RCA NOS 1961 (41/48ma)

$ 19.99
(!!!) (Best Pair #3) 407A Western Electric NOS

(!!!) (Best Pair #3) 407A Western Electric NOS "O" getter 1972-1983 (40-40/26 and 42-43/26)

$ 74.44
(!!!) (Best Pair from 1959) EL84 Wien Austria same build and sound as Holland 1959 (38ma and 39ma)

(!!!) (Best Pair from 1959) EL84 Wien Austria same build and sound as Holland 1959 (38ma and 39ma)

$ 99.99
(!!!) (Best Pair) 6BL7GTA GE black plates NOS 1958 and 1966 (43.0/44.5ma and 40.5/41.5ma) (very close Gm matching)

(!!!) (Best Pair) 6BL7GTA GE black plates NOS 1958 and 1966 (43.0/44.5ma and 40.5/41.5ma) (very close Gm matching)

$ 27.99
(!!!) (Best SIngle 1950's) 12AT7 Brimar UK black plates

(!!!) (Best SIngle 1950's) 12AT7 Brimar UK black plates "O" getter halo NOS late 1950's (11.6/12.8ma)

$ 89.99
(!!!) (Best Single 1953) JG-5814 GE NOS

(!!!) (Best Single 1953) JG-5814 GE NOS "square getter halo" and "short wide ribbed dark black plates" 1953 in white box (11.0/12.5ma)

$ 49.99
(!!!) (Best Single) 12AU7A Tungsol tall ribbed plates NOS

(!!!) (Best Single) 12AU7A Tungsol tall ribbed plates NOS "O" getter halo 1960 era (10.8/11.4ma)

$ 59.99
(!!!) (Best Single) 2C51=5670 Sylvania NOS 1970's (8.8/8.4ma)

(!!!) (Best Single) 2C51=5670 Sylvania NOS 1970's (8.8/8.4ma)

$ 34.99
(!!!) (Best Value Single 1965) 12AX7=ECC83 Siemens Germany ribbed plates used/good (0.9/0.8ma and Gm=1500/1400)

(!!!) (Best Value Single 1965) 12AX7=ECC83 Siemens Germany ribbed plates used/good (0.9/0.8ma and Gm=1500/1400)

$ 68.88
(!!!) (Good Value Single) 5751 GE

(!!!) (Good Value Single) 5751 GE "5 Star" black plates triple mica U getter 1959 used/good (1.7/1.8ma)

$ 59.99
(!!!) (Good Value Single) 5751 GE

(!!!) (Good Value Single) 5751 GE "5 Star" gray plates triple mica "O" getter 1960 used/good (1.7/2.0ma)

$ 69.99
(!!!) (Good Value) JG-5814A GE triple mica

(!!!) (Good Value) JG-5814A GE triple mica "U" getter halo like new 1955 in white box (8.8/9.6ma)

$ 29.99
(!!!) (Recommended Black Plates) 12AU7A Westinghouse black plates 1960 era rebranded United 1981

(!!!) (Recommended Black Plates) 12AU7A Westinghouse black plates 1960 era rebranded United 1981 "D" getter halo (8.4/9.8ma) (similar to RCA black plates)

$ 39.99
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