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(!!!) (Pair) UX-226 RCA Radiotron balloon used/good 1930 era (3.9ma and 3.6ma)

(!!!) (Pair) UX-226 RCA Radiotron balloon used/good 1930 era (3.9ma and 3.6ma)

$ 35.99
(!!!) (Recommended Pair) 12A National Union NOS 1950 era different shape top mica (8.5ma and 8.1ma)

(!!!) (Recommended Pair) 12A National Union NOS 1950 era different shape top mica (8.5ma and 8.1ma)

$ 74.99
(!!!) (Recommended Pair) 26 GE and Ken Rad NOS same build 1940's (3.9ma and 4.0ma)

(!!!) (Recommended Pair) 26 GE and Ken Rad NOS same build 1940's (3.9ma and 4.0ma)

$ 44.99
(!!!) (Recommended Pair) 26 Sylvania branded Zenith black plate NOS 1946 (4.9ma and 5.0ma) (rare) 1% matched

(!!!) (Recommended Pair) 26 Sylvania branded Zenith black plate NOS 1946 (4.9ma and 5.0ma) (rare) 1% matched

$ 59.99
(!!!) (Recommended Single) 127 Arcturus Blue Balloon used/good 1930 era in white box (4.3ma)

(!!!) (Recommended Single) 127 Arcturus Blue Balloon used/good 1930 era in white box (4.3ma)

$ 44.99
(!!!) (Recommended Single) 80 Cunningham Balloon used/good 1930's (46/40 and 46/40)

(!!!) (Recommended Single) 80 Cunningham Balloon used/good 1930's (46/40 and 46/40)

$ 109.99
(!!!) (Recommended Single) C-299=UV-99 Cunningham NOS 1920's (2.3ma) (highest Ma) (UV have small pins) (strong Gm)

(!!!) (Recommended Single) C-299=UV-99 Cunningham NOS 1920's (2.3ma) (highest Ma) (UV have small pins) (strong Gm)

$ 69.99
(!!!) (Recommended Single) C-299=UV-99 Cunningham NOS 1920's with tube data sheet (2.4ma) (highest Ma) (UV have small pins) (strong Gm)

(!!!) (Recommended Single) C-299=UV-99 Cunningham NOS 1920's with tube data sheet (2.4ma) (highest Ma) (UV have small pins) (strong Gm)

$ 69.99
(!!!) CX-331 Cunningham NOS 1920's (12ma) (rare)

(!!!) CX-331 Cunningham NOS 1920's (12ma) (rare)

$ 39.99
(!!!) CX-380 Cunningham Balloon used/good 1930 era (46/40 and 56/40)

(!!!) CX-380 Cunningham Balloon used/good 1930 era (46/40 and 56/40)

$ 99.99
(!!!) CX-380 Cunningham Balloon used/good/70% 1930 era (42/40 and 44/40)

(!!!) CX-380 Cunningham Balloon used/good/70% 1930 era (42/40 and 44/40)

$ 69.99
(!!!) UX-213 (sub for Type 80) Rectron Balloon 1920's used/60% thropiated tungsten filaments (38/40 and 38/40) (rare)

(!!!) UX-213 (sub for Type 80) Rectron Balloon 1920's used/60% thropiated tungsten filaments (38/40 and 38/40) (rare)

$ 99.99
(!!!) UX-280 RCA Radiotron Balloon used/good 1930 era some white oxide flakes at bottom of tube (46/40 and 48/40)

(!!!) UX-280 RCA Radiotron Balloon used/good 1930 era some white oxide flakes at bottom of tube (46/40 and 48/40)

$ 109.99
(!!) (Best Single) 26 Deforest Audion balloon tests like new 1920's (8.3ma, Gm=1300)

(!!) (Best Single) 26 Deforest Audion balloon tests like new 1920's (8.3ma, Gm=1300)

$ 34.99
(!!) (Best Single) UY-227 RCA Radiotron Balloon tests like new 1930 era (10.2ma)

(!!) (Best Single) UY-227 RCA Radiotron Balloon tests like new 1930 era (10.2ma)

$ 39.99
(!!) (Best Value Pair) 71A Philco and Aristocrat used/good 1930's similar build (25.6ma and 27ma) (same Gm)

(!!) (Best Value Pair) 71A Philco and Aristocrat used/good 1930's similar build (25.6ma and 27ma) (same Gm)

$ 64.99
(!!) (DISPLAY TUBE) 180 Arcturus Blue 1930 era (does not work - display tube only)

(!!) (DISPLAY TUBE) 180 Arcturus Blue 1930 era (does not work - display tube only)

$ 29.99
(!!) (Pair) 71A RCA Victor and Super Silvertone used/good 1930's - 1940's (21.5ma and 25ma) (Same Gm)

(!!) (Pair) 71A RCA Victor and Super Silvertone used/good 1930's - 1940's (21.5ma and 25ma) (Same Gm)

$ 89.99
(!!) (Recommended 27 Balloon) C-327 Cunningham Balloon mesh-plate used/very good 1930's (5.2ma)

(!!) (Recommended 27 Balloon) C-327 Cunningham Balloon mesh-plate used/very good 1930's (5.2ma)

$ 27.99
(!!) (Recommended Pair) CX-112A Cunningham Balloon engraved base used/good 1930 era (6.2ma and 7.0ma) (same Gm)

(!!) (Recommended Pair) CX-112A Cunningham Balloon engraved base used/good 1930 era (6.2ma and 7.0ma) (same Gm)

$ 79.99
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