(!!!) (#1 6SC7 Matched Pair) 6SC7 RCA metal can NOS 1960's 1-2% matched
(!!!) (2nd Best Pair) 6SC7GTY Tungsol NOS round black plates 1950 era (2.0/2.1ma and 2.0/2.1ma)
(!!!) (Best Pair) 6SC7GTY Tungsol NOS round black plates 1950 era (2.1/2.1ma and 2.2/2.2ma)
(!!) (~ Best Sounding Single ~) 6SC7GTY Tungsol NOS black round plates NOS 1950 era (2.2ma and 2.4ma)
6SC7 RCA Cunningham NOS 1949 some surface rust on metal can (2.2/2.3ma)
6SC7 RCA NOS 1940's - 1950 (2.3/2.4ma)
6SC7 RCA NOS small amount of surface rust or chipped black paint (2.3/2.5ma)
6SC7=VT-105 GE used/good 1940's (1.6/1.8ma)
6SC7GT Tungsol black base, black round plates used/tests like new 1940's in white box (1.7/1.7ma)
