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(!!!!!) (Recommended Pair) 6V6GT Ken Rad coated glass NOS 1949 (39ma and 42ma)
(!!!!!) (Single) 6V6GT Ken Rad coated glass NOS 1940's (40.5ma)
(!!!!) (BEST PAIR) 6V6GT=VT-107A National Union coated glass NOS 1943-1950 (46.2ma and 47.5ma)
(!!!) (Best Pair) 1625 National Union NOS 1944 (90/40 x 2 tubes)
(!!!) (Best Pair) 1625=VT-136 National Union NOS 1943-1944 (87/40 and 90/40)
(!!!) (Recommended Pair) 71A Sylvania and Sylvania branded Tungsol NOS 1947-1950 same build (30.2ma and 32.4ma) (Highest mA and Gm)
(!!!) (SINGLE) 6L6GAY Sylvania brown base NOS 1956 aged 48-hours (73ma)
(!!!) (SINGLE) 6L6GAY Sylvania brown base NOS 1956 aged 48-hours (84.2ma)
(!!) (Best Pair) 2C26A National Union NOS 1940's (71/38 and 72/38)
(!!) 2A3 Sylvania black plates connected in middle like new 1940's (104ma)
(!!) 2A3 Sylvania rebranded National Union black plates connected in middle like new 1940's (108ma)
(!!) 6V6GT=VT-107A National Union coated glass NOS 1945 (37ma)
(!) (1 Pair) 1625=VT-136 RCA like new mid-1940's (72/40 and 70/40)
(!) (1 Pair) 1625=VT-136 RCA like new mid-1940's (82/40 and 82/40)
(!) (1 Pair) JAN-CHS-1625 Sylvania 1940's like new (72/40 and 72/40)
(!) (Best Value Pair) US Navy-CNU-1626 National Union NOS 1940's (30ma and 32.5ma)
(!) (BEST VALUE SINGLE) 45 National Union ST-14 NOS printed base 1940's (25ma)
(!) (PAIR) 2C26 Hytron NOS 1944 (68/38 and 72/38)
(!) (PAIR) 2C26 Hytron NOS 1944 (73/38 and 76/38)
(!) (PAIR) 2C26 National Union NOS 1940's (67/38 and 69/38)