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5Z4 CBS NOS 1954 (53/40 and 55/40)
5Z4 Ken Rad NOS 1946 (53/40 and 53/40)
5Z4 Ken Rad NOS 1949 (53/40 and 53/40)
5Z4 RCA JAN NOS 1959 (51/40 and 51/40)
5Z4 RCA NOS mid-1940's (50/40 and 51/40)
6005=6AQ5A RCA NOS 1970's (39ma)
6005=6AQ5A RCA NOS 1973 (41ma)
6074 RCA NOS 1954-1956 (high stability 0B2) (0 in stock)
6074 RCA NOS 1960-1961 (high stability 0B2) (0 in stock)
6080 RCA black plates used/good 1956 broken guide pin (66/77ma)
6080WB Raytheon black plates NOS 1966 (95/120ma)
6146 unknown maker NOS in CEI box tilted glass (116ma)
6146A GE NOS 1960's (82ma)
6146A GE NOS 1965 (69ma)
6146A RCA used/good 1971 (80ma)
6146B GE Amperex used/good 1979 (84ma)
6202 GE branded National NOS 1960's (51/40 and 51/40)
6202 GE rebranded 6X4WA GE NOS 1966 (54/40 and 54/40)
6202 GE tests like new no printing 1960's (54/40 and 56/40)
6202 GE used/good 1960's (51/40 and 51/40)
