50B5 RCA branded Raytheon NOS 1950's (64/45)
534AX Raytheon NOS (4 in stock)
547DX Raytheon NOS (3 in stock)
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 Sylvania branded RCA NOS 1946 (6.0ma)
56 Sylvania NOS 1940's (5.8ma)
56 Tungsol rebranded Raytheon tests like new 1940's (6.1ma)
5651 RCA NOS 1950's (1 pair)
5651 Sylvania rebranded GE NOS 1960's (2 in stock)
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)
