0D3 Hytron like new 1949 (argon)
0D3 RCA low hours/tests like new 1975 slightly tilted glass - rattle inside base (argon)
0D3 RCA tests like new 1940's (argon)
0D3 Tungsol NOS 1950's slightly tilted glass (argon)
0D3A Sylvania NOS 1970's (1 pair)
0Y4 NOS
0Z4 US Brands metal can NOS (6 in stock)
0Z4G GE 1952-1953 NOS (2 in stock)
150C2=0A2 Mullard branded Philips NOS 1968 (argon)
5651 GE "D" getter NOS 1956
5651 GE NOS 1960's (1 in stock)
5651 RCA NOS 1960's (0 in stock)
5651 Sylvania rebranded GE NOS 1960's (2 in stock)
5651 Tungsol branded GE NOS 1964 (1 in stock)
5651 used/good (30 in stock)
5651A RCA NOS 1960's - 1973 (0 in stock)
5651A Sylvania rebranded RCA NOS 1983 (1 in stock)
5651WA Sylvania JAN 1980-1982 Diode Voltage Reference (8 in stock)
6074 RCA NOS 1954-1956 (high stability 0B2) (0 in stock)
6074 RCA NOS 1960-1961 (high stability 0B2) (0 in stock)