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(!!!) (Recommended Pair) 76 Sylvania NOS - 1 tube branded National Union 1947 era same build (5.3ma and 5.6ma)
(!!!) (Recommended Single) ER-230=30 Raytheon 1930's used/like new (4.1ma and Gm=800)
(!!!) (Single) 6J5G Sylvania engraved base black oval plate used/very good 1930's (8.0ma)
(!!!) 231=31 US Made Balloon NOS 1920's (14.2ma)
(!!!) 31 RCA Radiotron Balloon NOS 1920's (13.2ma)
(!!!) 76 Crosley by Ken Rad engraved base like new 1930's (5.7ma)
(!!!) CX-331 Cunningham NOS 1920's (12ma) (rare)
(!!) (#1 37 Pair) 37 RCA like new 1940's (7.7ma and 7.8ma) 1% matched
(!!) (#1 37 Pair) 37 RCA NOS 1940's (7.3ma and 7.5ma)
(!!) (#1 37 Pair) 37 RCA NOS 1940's (8.5ma and 8.5ma) 1% matched
(!!) (#4 Type 30 PAIR) USN-CRC-30 RCA NOS 1940's "L" bracket (2.4ma and 2.8ma)
(!!) (1 Pair) 30 RCA Cunningham NOS 1946 (2.6ma and 3.1ma)
(!!) (1 Pair) 31 Cunningham NOS 1940's (11ma and 11.6ma)
(!!) (Best Matched Pair) 30 Sylvania NOS - same plates - different shape top mica 1945-1946 (3.2ma and 3.1ma) 1-2% matched
(!!) (Best Pair) 10=VT-25 Sylvania and Sylvania branded Tungsol NOS 1940's (26.5ma and 29ma)
(!!) (BEST PAIR) 272A Western Electric NOS "meshplate" 1961 and 1969 (6.1ma and 6.4ma)
(!!) (Best Pair) 5719 Sylvania Gold Brand NOS 1952 in white boxes (0.9ma/0.8ma) 1-3% matched
(!!) (Best Single) 26 Deforest Audion balloon tests like new 1920's (8.3ma, Gm=1300)
(!!) (Best Single) UX-120=20 Radiotron used/tests like new 1920's (7.3ma)
(!!) (Best Value Pair) 30 Sylvania NOS branded DELCO NOS 1947 (3.3ma and 2.8ma)
