(!!!) (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)
(!!!) (BEST PAIR) 5998A Sylvania JAN NOS 1980 (121/123ma and 122/126ma) (5998A=7236) 1-3% matched
(!!!) (BEST PAIR) 5998A Sylvania JAN NOS 1980 (122/127ma and 123/126ma) (5998A=7236)
(!!!) (BEST PAIR) 5998A Sylvania JAN NOS 1980 (124/126ma and 126/122ma) (5998A=7236)
(!!!) (BEST PAIR) 5998A Sylvania JAN NOS 1980 (136/132ma and 134/132ma) (5998A=7236)
(!!!) (BEST PAIR) 6A3 Tungsol coated glass NOS 1940's (64ma and 65ma)
(!!!) (BEST PAIR) 6A5G Sylvania NOS 1940's - 1 branded Philco - same build (100ma and 102ma)
(!!!) (BEST PAIR) 6AS7GA Sylvania NOS 1960's (101/111ma and 100/120ma)
(!!!) (Best Pair) 6B4G Sylvania rebranded GE 1952 separate plates NOS (87ma and 87.5ma) (High Ma and Gm)
(!!!) (Best Pair) 6BQ5 RCA NOS 1962-1966 (47ma and 48ma)
(!!!) (Best Pair) 6F6GT Tungsol NOS 1954 (34ma and 34.5ma)
(!!!) (BEST PAIR) 6K6GT Sylvania coated glass NOS 1940's (1) branded Philco (44ma and 44.6ma)
(!!!) (Best Pair) 6KG6A Westinghouse JAPAN NOS original boxes 1973 (152ma and 160ma)
(!!!) (Best Pair) 6KG6A Westinghouse JAPAN NOS original boxes 1973 (157ma and 164ma)
(!!!) (Best Pair) 6L6G MULLARD UK BVA coated glass NOS 1955 (64.5ma and 65.2ma)
(!!!) (Best Pair) 6L6G MULLARD UK NOS 1959 (67.2ma and 68.6ma)
(!!!) (BEST PAIR) 6LF6 Sylvania NOS 1970's (131ma and 134ma) (Counterpoint OTL, Futterman OTL, Prodigy OTL)
(!!!) (Best Pair) 6V6GT Raytheon black plate coated glass NOS 1951 (41.5ma and 45ma)
(!!!) (Best Pair) 7027A RCA and RCA Bogen NOS 1961-1966 (75.6ma and 77.5ma) (very close Gm)
