Top quality mil. spec. preamp tubes manufactured for the armed forces in the United States by Philips ECG. These miniature glass 9 pin double triodes have long gray ribbed plates, four stout copper posts, and top halo getters. They are printed in green JAN 5814A PHILIPS ECG U.S.A. and coded 34167, three letter code, and 1985 production codes. Boxes are NATO coded 5960-00262-0210 FSCM 82219 MFR/PN JAN 5814A 2MT84-03429 delivered September 1985.