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5517 Raytheon NOS 1950 (single)
56 Made in Holland NOS 1940's (5.1ma)
56 no name NOS 1950's (5.7ma)
56 RCA no name NOS 1940's getter halo screen loose at bottom of tube (6.5ma)
56 RCA no name NOS 1940's made for Radiotelefonica Argentia (5.1ma)
56 Tungsol rebranded Raytheon tests like new 1940's (6.1ma)
5651A Sylvania rebranded RCA NOS 1983 (1 in stock)
5842Q Raytheon NOS 1983 (21ma and Gm=21,600)
5876 Raytheon NOS 1960's (3 in stock)
5876A RCA NOS 1960's (2 in stock)
5876A RCA NOS 1970's (7 in stock)
5876A Tungsol NOS 1968 (1 in stock)
5889=ME1403 Flat Press Electrometer Pentode (10 in stock)
5AS4A GE branded Tungsol "D" getter halo 1960 era (63/40 and 68/40)
5AS4A GE branded Tungsol gray plates D getter NOS 1960 era (60/40 and 60/40)
5AS4A Tungsol black plates NOS "D" getter halo 1950's (56/40 and 58/40)
5BZ7=5BQ7A GE gray plates NOS 1971 (13/16.2ma)
5Y3GT Sylvania used/good 1955 (46/40 and 51/40)
5Y4G RCA used/good 1948 (48/40 and 53/40)
5Y4GA RCA NOS 1963 (54/40 and 57/40)
