38233=2C21 Raytheon ceramic base NOS 1930's
By Tube World
$ 19.99
US Navy CRP 38233=2C21 Raytheon 4 Pillar NOS, black carbonized plates in brown box 1930's
2C21=RK-33=1642=38233
used in aircraft receivers
Mu=10
See more: vacuum tube
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