Details
New old stock 9 pin miniature twin triode. Various brands. No gold-flashed pins. A low noise 6DJ8. E88CC is the European designation.
NSN/FSN = 5960006769016, 5960006819596, 5960006859283, 5960007545366, 5960007799144, 5960008512975, 5960008512975, 5960009450380
HP/Agilent Number = 1932-0015, 1960-0002, 5080-0416
Tektronix Number = 154-0195-00, 154-0204-00