1N5125 semiconductor manufactured by Sylvania, listed as 1N5125 (circa 1979).

1N5023A semiconductor manufactured by Sylvania, listed as 1N5023A (circa 1979).

1N4905 semiconductor manufactured by Sylvania, listed as 1N4905 (circa 1979).

1N4831A semiconductor manufactured by Sylvania, listed as 1N4831A (circa 1979).

1N4725 semiconductor manufactured by Sylvania, listed as 1N4725 (circa 1979).

1N4556 semiconductor manufactured by Sylvania, listed as 1N4556 (circa 1979).

1N4426A semiconductor manufactured by Sylvania, listed as 1N4426A (circa 1979).

1N5124 semiconductor manufactured by Sylvania, listed as 1N5124 (circa 1979).

1N5023 semiconductor manufactured by Sylvania, listed as 1N5023 (circa 1979).

1N4904A semiconductor manufactured by Sylvania, listed as 1N4904A (circa 1979).

1N4831 semiconductor manufactured by Sylvania, listed as 1N4831 (circa 1979).

1N4724 semiconductor manufactured by Sylvania, listed as 1N4724 (circa 1979).

1N4555A semiconductor manufactured by Sylvania, listed as 1N4555A (circa 1979).

1N4426 semiconductor manufactured by Sylvania, listed as 1N4426 (circa 1979).

1N5123 semiconductor manufactured by Sylvania, listed as 1N5123 (circa 1979).

1N5022A semiconductor manufactured by Sylvania, listed as 1N5022A (circa 1979).

1N4904 semiconductor manufactured by Sylvania, listed as 1N4904 (circa 1979).

1N4830 semiconductor manufactured by Sylvania, listed as 1N4830 (circa 1979).

1N4723 semiconductor manufactured by Sylvania, listed as 1N4723 (circa 1979).

1N4555 semiconductor manufactured by Sylvania, listed as 1N4555 (circa 1979).