E83F (Philips) Special Quality Pentode page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 E83F sheet 1 1 2 2 3 3 4 4 5 5 A B C D E F G H I date 1958.06.06 1962.08.08 1958.06.06 1962.08. (18 views)
E83F (Philips) S.Q. Tube page 1 2 3 4 5 6 7 8 9 10 11 E83F sheet 1 2 3 4 5 6 7 8 9 10 FP date 1968.12 1968.12 1968.12 1968.12 1968.12 1968.12 1968.12 1968.12 1968.12 1968.12 (16 views)
