1N5671A semiconductor manufactured by Sylvania, listed as 1N5671A (circa 1979).

1N5559B semiconductor manufactured by Sylvania, listed as 1N5559B (circa 1979).

1N5418 semiconductor manufactured by Sylvania, listed as 1N5418 (circa 1979).

1N5359 semiconductor manufactured by Sylvania, listed as 1N5359 (circa 1979).

1N5271A semiconductor manufactured by Sylvania, listed as 1N5271A (circa 1979).

1N5232B semiconductor manufactured by Sylvania, listed as 1N5232B (circa 1979).

1N5858B semiconductor manufactured by Sylvania, listed as 1N5858B (circa 1979).

1N5621 semiconductor manufactured by Sylvania, listed as 1N5621 (circa 1979).

1N5559A semiconductor manufactured by Sylvania, listed as 1N5559A (circa 1979).

1N5415 semiconductor manufactured by Sylvania, listed as 1N5415 (circa 1979).

1N5358B semiconductor manufactured by Sylvania, listed as 1N5358B (circa 1979).

1N5271 semiconductor manufactured by Sylvania, listed as 1N5271 (circa 1979).

1N5232A semiconductor manufactured by Sylvania, listed as 1N5232A (circa 1979).

1N5858A semiconductor manufactured by Sylvania, listed as 1N5858A (circa 1979).

1N5559 semiconductor manufactured by Sylvania, listed as 1N5559 (circa 1979).

1N5414 semiconductor manufactured by Sylvania, listed as 1N5414 (circa 1979).

1N5358A semiconductor manufactured by Sylvania, listed as 1N5358A (circa 1979).

1N5270B semiconductor manufactured by Sylvania, listed as 1N5270B (circa 1979).

1N5232 semiconductor manufactured by Sylvania, listed as 1N5232 (circa 1979).

1N5857B semiconductor manufactured by Sylvania, listed as 1N5857B (circa 1979).