Details
New old stock ruggedized 7 pin miniature sharp cutoff pentode. Various brands.
NSN/FSN = 5960000895931, 5960001935115, 5960002305235, 5960002621357, 5960005561290, 5960006178923, 5960006361879, 5960006696863, 5960007131911, 5960007293133, 5960008996567 (pair)
HP/Agilent Number = 1923-0001
Tektronix Number = 154-0084-00, 154-0206-00