1N5259B semiconductor manufactured by Sylvania, listed as 1N5259B (circa 1979).

1N5219 semiconductor manufactured by Sylvania, listed as 1N5219 (circa 1979).

1N5756B semiconductor manufactured by Sylvania, listed as 1N5756B (circa 1979).

1N5586A semiconductor manufactured by Sylvania, listed as 1N5586A (circa 1979).

1N5536A semiconductor manufactured by Sylvania, listed as 1N5536A (circa 1979).

1N5385B semiconductor manufactured by Sylvania, listed as 1N5385B (circa 1979).

1N5346B semiconductor manufactured by Sylvania, listed as 1N5346B (circa 1979).

1N5259A semiconductor manufactured by Sylvania, listed as 1N5259A (circa 1979).

1N5218 semiconductor manufactured by Sylvania, listed as 1N5218 (circa 1979).

1N5756 semiconductor manufactured by Sylvania, listed as 1N5756 (circa 1979).

1N5586 semiconductor manufactured by Sylvania, listed as 1N5586 (circa 1979).

1N5536 semiconductor manufactured by Sylvania, listed as 1N5536 (circa 1979).

1N5385A semiconductor manufactured by Sylvania, listed as 1N5385A (circa 1979).

1N5346A semiconductor manufactured by Sylvania, listed as 1N5346A (circa 1979).

1N5259 semiconductor manufactured by Sylvania, listed as 1N5259 (circa 1979).

1N5217 semiconductor manufactured by Sylvania, listed as 1N5217 (circa 1979).

1N5755B semiconductor manufactured by Sylvania, listed as 1N5755B (circa 1979).

1N5585B semiconductor manufactured by Sylvania, listed as 1N5585B (circa 1979).

1N5535B semiconductor manufactured by Sylvania, listed as 1N5535B (circa 1979).

1N5385 semiconductor manufactured by Sylvania, listed as 1N5385 (circa 1979).