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(!!) (Pair) 12X4 RCA black plates NOS 1970 (44-47/40 and 44-47/40)
(!!) (Pair) 6AX4GTB Sylvania NOS and like new 1960's (56/40 and 53/40)
(!!) (PAIR) 6BQ6GTB=6CU6 Sylvania NOS 1960's (48.5ma and 48.6ma)
(!!) (PAIR) 6BQ6GTB=6CU6 Sylvania NOS 1960's (51ma and 52.5ma)
(!!) (PAIR) 6CL6 RCA NOS 1966-1967 (25.0ma and 26.6ma)
(!!) (PAIR) 6CL6 RCA NOS 1970's (28.5ma and 29ma)
(!!) (PAIR) 6CW4 GE NOS 1980-1981 (88/60 and 91/60)
(!!) (PAIR) 6K6GT Philco by Sylvania NOS 1950-1951 (53.5ma and 57ma)
(!!) (Pair) 6SJ7 GE metal can NOS 1977 (2.4ma and 2.3ma) (same Gm)
(!!) (PAIR) 6V6 GE metal can NOS 1976 (34.5ma and 34.0ma) 1-5% matched
(!!) (PAIR) 6V6 GE metal can NOS 1976 (37ma and 38ma)
(!!) (Pair) 71A RCA Victor and Super Silvertone used/good 1930's - 1940's (21.5ma and 25ma) (Same Gm)
(!!) (PAIR) 7AF7 Sylvania branded RCA and GE NOS black round plates NOS 1956-1958 (7.0/7.6ma and 8.2/7.8ma) (close Gm matching)
(!!) (PAIR) 811 RCA and RCA branded GE like new 1947-1951 (57/36 and 52/36)
(!!) (PAIR) JAN-CRC-6AC& RCA used/tests like new 1955-1957 (12.6/11.0ma) (close Gm)
(!!) (RCA Pair) 6CS7 RCA NOS 1962-1965 (17/11ma and 17/12.6ma)
(!!) (Recommended Pair) 0B2 Amperex Globe Holland NOS 1970's made in Europe (argon gas)
(!!) (Recommended Pair) 0B2 Amperex Globe Holland NOS 1970's made in Japan (argon gas) (Copy)
(!!) (Recommended Pair) 12HG7=12GN7A Sylvania coated glass NOS 1970 era (52ma and 55ma)
(!!) (Recommended Pair) 12HG7=12GN7A Sylvania NOS 1970 era (42ma and 43ma)