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(!!!!) (Best Pair #3) 6973 RCA NOS NOS 1969 (37.0ma and 39.5ma)

(!!!!) (Best Pair #3) 6973 RCA NOS NOS 1969 (37.0ma and 39.5ma)

$ 198.88
(!!!!) (Best Pair #3) 6BQ5 GE NOS 1970's-1982 same build (51ma and 55.6ma)

(!!!!) (Best Pair #3) 6BQ5 GE NOS 1970's-1982 same build (51ma and 55.6ma)

$ 134.99
(!!!!) (Best Pair #3) 6EU7 RCA NOS 1967 (48-49/32 and 51-52/32)

(!!!!) (Best Pair #3) 6EU7 RCA NOS 1967 (48-49/32 and 51-52/32)

$ 84.99
(!!!!) (Best Pair #3) 7247=12DW7 Mullard UK NOS rebranded RCA 1972 (1.0/11.4ma and 0.9/10.8ma) 1-3% matched

(!!!!) (Best Pair #3) 7247=12DW7 Mullard UK NOS rebranded RCA 1972 (1.0/11.4ma and 0.9/10.8ma) 1-3% matched

$ 129.99
(!!!!) (Best Pair 1930's) 30 Sylvania engraved base NOS 1930's (3.2ma and 3.4ma) (same Gm)

(!!!!) (Best Pair 1930's) 30 Sylvania engraved base NOS 1930's (3.2ma and 3.4ma) (same Gm)

$ 38.88
(!!!!) (Best Pair for the money) 5Y3GT Philips Holland NOS 1960's (60-66/40 and 60-66/40)

(!!!!) (Best Pair for the money) 5Y3GT Philips Holland NOS 1960's (60-66/40 and 60-66/40)

$ 59.99
(!!!!) (Best Pair) 201A Silvertone Balloon NOS and like new 1930 era (4.2ma and 5.0ma) (Highest mA and Gm)

(!!!!) (Best Pair) 201A Silvertone Balloon NOS and like new 1930 era (4.2ma and 5.0ma) (Highest mA and Gm)

$ 99.99
(!!!!) (Best Pair) 30 Sylvania NOS 1946 (3.4ma and 3.8ma) (same Gm)

(!!!!) (Best Pair) 30 Sylvania NOS 1946 (3.4ma and 3.8ma) (same Gm)

$ 38.88
(!!!!) (Best Pair) 5751 RCA black plates NOS 1976 (2.5/3.1ma and 2.5/2.8ma) (Best Audio Grade 5751)

(!!!!) (Best Pair) 5751 RCA black plates NOS 1976 (2.5/3.1ma and 2.5/2.8ma) (Best Audio Grade 5751)

$ 249.99
(!!!!) (Best Pair) 5Y3GT Philips Holland NOS 1960's (60-64/40 and 60-65/40)

(!!!!) (Best Pair) 5Y3GT Philips Holland NOS 1960's (60-64/40 and 60-65/40)

$ 59.99
(!!!!) (Best Pair) 6BQ7A RCA black plates NOS 1967 same date codes (15/14.5ma and 13.5/16.5ma)

(!!!!) (Best Pair) 6BQ7A RCA black plates NOS 1967 same date codes (15/14.5ma and 13.5/16.5ma)

$ 69.99
(!!!!) (BEST PAIR) 6EU7 Tungsol Dumont

(!!!!) (BEST PAIR) 6EU7 Tungsol Dumont "D" getter NOS 1963 (50-51/32 and 49-52/32) 1-3% matched

$ 99.99
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950 (1.0ma and 1.0ma) 1-2% matched **

(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950 (1.0ma and 1.0ma) 1-2% matched **

$ 29.99
(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950-1953 (1.0ma and 1.0ma) 1% matched **

(!!!!) (BEST PAIR) 6SQ7 RCA NOS 1950-1953 (1.0ma and 1.0ma) 1% matched **

$ 27.99
(!!!!) (Best Pair) 6U8A Philips by Sylvania NOS 1986 (14/10ma and 14.2/9.6ma)

(!!!!) (Best Pair) 6U8A Philips by Sylvania NOS 1986 (14/10ma and 14.2/9.6ma)

$ 34.99
(!!!!) (Best Pair) 7189 Sylvania black plates NOS 1970 era (42ma and 46ma)

(!!!!) (Best Pair) 7189 Sylvania black plates NOS 1970 era (42ma and 46ma)

$ 149.99
(!!!!) (Best Pair) 807 RCA black plate NOS 1958-1960 - 1 tube has scratches on base (67ma and 69ma)

(!!!!) (Best Pair) 807 RCA black plate NOS 1958-1960 - 1 tube has scratches on base (67ma and 69ma)

$ 52.99
(!!!!) (BEST PAIR) 811A GE made by RCA NOS 1950's (55/36 and 56/36)

(!!!!) (BEST PAIR) 811A GE made by RCA NOS 1950's (55/36 and 56/36)

$ 179.99
(!!!!) (Best Pair) CX-301-A Cunningham used/good 1928-1930 era (2.6ma and 2.5ma) (same Gm)

(!!!!) (Best Pair) CX-301-A Cunningham used/good 1928-1930 era (2.6ma and 2.5ma) (same Gm)

$ 69.99
(!!!!) (Best Pair) CX-301A Cunningham and UX-201A RCA Balloon NOS 1930 era (3.1ma and 3.5ma)

(!!!!) (Best Pair) CX-301A Cunningham and UX-201A RCA Balloon NOS 1930 era (3.1ma and 3.5ma)

$ 119.99
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