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6BG6G RCA NOS 1963 (63ma)
6BG6G Zalytron by RCA used/good 1959 (62ma)
6BG6GA GE Relaible Selectron NOS 1957 (74ma)
6BG6GA Philco used/good/75% 1958 (58ma)
6BG6GA Raytheon NOS 1957 (73ma)
6BG6GA RCA Coronado NOS 1950's (71ma)
6BG6GA Sylvania NOS 1966 (95ma)
6BK4C NOS (10 in stock)
6BK4C used
6BK5 US Brands NOS (20 in stock)
6BL6 NOS (6 in stock)
6BM6 Litton Industries USA Klystron NOS (6 in stock)
6BN11 US Brands NOS (9 in stock)
6BQ5 GE NOS 1960's (40ma)
6BQ5 GE NOS 1973 (71ma) (recommended for FIXED-BIAS amp only due to high current)
6BQ5 GE NOS 1977 (58.5ma)
6BQ5 GE Zenith NOS 1976 (46.2ma)
6BQ5 Lindal Japan like new 1970's (50ma)
6BQ5 Lindal Japan NOS 1970's (42ma)
6BQ5 Lindal Japan NOS 1978 (59.5ma)
