(!!!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.7/1.7/1.7/1.7ma) 1-2% matched
(!!!!) (Recommended Pair) 6F6G Marconi Spain NOS 1940's (33.2ma and 34.2ma)
(!!!!) (Recommended Pair) 6F6G Marconi Spain NOS 1940's (35.2ma and 34.0ma)
(!!!!) (Recommended Pair) 6F6G Marconi Spain NOS 1940's (37.5ma and 39ma)
(!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.5/1.5/1.5/1.5ma) 1-2% matched
(!!!) (MATCHED QUAD) JAN-CW-231D Western Electric NOS 1953 (1.6/1.6/1.6/1.5ma) 1-2% matched
(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.5ma and 1.5ma)
(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.8ma and 1.8ma)
(!!!) 80 RCA Victor NOS 1948 (56/40 and 58/40)
(!!) 6AS7G RCA black plates used/good 1952 (100/140ma)
(!!) 6E5 GE NOS 1960's pupil slightly off center - bright eye
(!!) 6E5 RCA NOS 1940's (2 in stock)
(!!) 6E5 Sylvania NOS (2 in stock)
(!!) 6V6GT Philco by Sylvania tests like new 1957 (42.2ma)
(!) (#1 231D Best Value Pair) 231D Western Electric NOS 1953 (1.8/1.8ma)
(!) (#1 231D Best Value Pair) 231D Western Electric NOS 1954 (1.6/1.6ma)
(!) (#2 231D Best Value Pair) 231D Western Electric NOS 1953 (1.7/1.7ma)
(Best Value) 5V4G RCA black plates used/very good 1948 (54/40 and 57/40)
(slightly microphonic) 6SN7GT Hytron NOS 1948 (7/8ma)