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(!!!!) (Best Balloon) MX-280 Marvin Custom Built used/strong 1920's (60/40 and 65/40) (rare)

(!!!!) (Best Balloon) MX-280 Marvin Custom Built used/strong 1920's (60/40 and 65/40) (rare)

$ 179.99
(!!!!) (Best Overall Pair) 01A Cunningham NOS 1940 era boxes were factory sealed (3.7ma and 3.6ma) (Same Gm)

(!!!!) (Best Overall Pair) 01A Cunningham NOS 1940 era boxes were factory sealed (3.7ma and 3.6ma) (Same Gm)

$ 109.99
(!!!!) (Best Pair #1) 01A RCA Cunningham engraved base NOS 1930's (3.5ma and 3.4ma) (same Gm)

(!!!!) (Best Pair #1) 01A RCA Cunningham engraved base NOS 1930's (3.5ma and 3.4ma) (same Gm)

$ 109.99
(!!!!) (Best Pair #2) 01A RCA Cunningham engraved base NOS 1930's (3.3ma and 3.2ma) (same Gm)

(!!!!) (Best Pair #2) 01A RCA Cunningham engraved base NOS 1930's (3.3ma and 3.2ma) (same Gm)

$ 99.99
(!!!!) (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 SINGLE) 201-A Silvertone Balloon NOS 1930 era (3.8ma and Gm=750)

(!!!!) (BEST SINGLE) 201-A Silvertone Balloon NOS 1930 era (3.8ma and Gm=750)

$ 57.99
(!!!!) (BEST SINGLE) UX-201-A RCA Radiotron Balloon NOS 1930 era (3.9ma and Gm=700)

(!!!!) (BEST SINGLE) UX-201-A RCA Radiotron Balloon NOS 1930 era (3.9ma and Gm=700)

$ 69.99
(!!!!) (Best Value Single) 10 GE Radiotron used/good 1940's (27ma)

(!!!!) (Best Value Single) 10 GE Radiotron used/good 1940's (27ma)

$ 54.99
(!!!!) (Pair) 01A Arcturus NOS 1940's (2.3ma and 2.7ma)

(!!!!) (Pair) 01A Arcturus NOS 1940's (2.3ma and 2.7ma)

$ 88.88
(!!!!) (RARE SINGLE) 300A Western Electric Engraved Base circa 1933 (60ma @ 300Vplate) (payment via wire transfer or credit card) (FREE shipping)

(!!!!) (RARE SINGLE) 300A Western Electric Engraved Base circa 1933 (60ma @ 300Vplate) (payment via wire transfer or credit card) (FREE shipping)

$ 5,888.88
(!!!!) (Single) 10 Sylvania

(!!!!) (Single) 10 Sylvania "engraved base" 1930's NOS (29ma)

$ 124.99
(!!!!) UX-280 RCA Radiotron Balloon used/60% 1930 era some white oxide flakes inside tube (38/40 and 38/40)

(!!!!) UX-280 RCA Radiotron Balloon used/60% 1930 era some white oxide flakes inside tube (38/40 and 38/40)

$ 32.99
(!!!) (#1 286A) 286A Western Electric

(!!!) (#1 286A) 286A Western Electric "top printing" NOS 1942-1945 (7.0ma)

$ 99.99
(!!!) (2nd Best Single) 27=127 Arcturus Blue Balloon tests like new 1930 era in white box (4.5ma)

(!!!) (2nd Best Single) 27=127 Arcturus Blue Balloon tests like new 1930 era in white box (4.5ma)

$ 54.99
(!!!) (Best Overall Pair) 286A Western Electric

(!!!) (Best Overall Pair) 286A Western Electric "top printing" mesh-plate NOS 1942-1945 (6.4ma and 6.6ma)

$ 199.99
(!!!) (Best Overall Single) 2A3 RCA black plates NOS 1940's (114ma) (high Gm)

(!!!) (Best Overall Single) 2A3 RCA black plates NOS 1940's (114ma) (high Gm)

$ 219.99
(!!!) (Best Pair) 12A Sylvania green leaf NOS 1940's original boxes (7.5ma and 7.9ma)

(!!!) (Best Pair) 12A Sylvania green leaf NOS 1940's original boxes (7.5ma and 7.9ma)

$ 79.99
(!!!) (Best Pair) 244A Western Electric NOS ST-14

(!!!) (Best Pair) 244A Western Electric NOS ST-14 "Engraved Base" 1930's - 1940 (4.1ma and 5ma) (close Gm)

$ 279.99
(!!!) (BEST PAIR) 485 National Radio tube engraved base mesh-plate NOS 1930's (6.0ma and 6.4ma) (variant of 27)

(!!!) (BEST PAIR) 485 National Radio tube engraved base mesh-plate NOS 1930's (6.0ma and 6.4ma) (variant of 27)

$ 99.99
(!!!) (BEST SINGLE - RARE) CX-330 Cunningham balloon engraved base NOS 1920's (3.0ma)

(!!!) (BEST SINGLE - RARE) CX-330 Cunningham balloon engraved base NOS 1920's (3.0ma)

$ 49.99
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