1N4881 semiconductor manufactured by Sylvania, listed as 1N4881 (circa 1979).

1N4788A semiconductor manufactured by Sylvania, listed as 1N4788A (circa 1979).

1N4703 semiconductor manufactured by Sylvania, listed as 1N4703 (circa 1979).

1N4529 semiconductor manufactured by Sylvania, listed as 1N4529 (circa 1979).

1N4418A semiconductor manufactured by Sylvania, listed as 1N4418A (circa 1979).

1N5087 semiconductor manufactured by Sylvania, listed as 1N5087 (circa 1979).

1N5011 semiconductor manufactured by Sylvania, listed as 1N5011 (circa 1979).

1N4880 semiconductor manufactured by Sylvania, listed as 1N4880 (circa 1979).

1N4788 semiconductor manufactured by Sylvania, listed as 1N4788 (circa 1979).

1N4702 semiconductor manufactured by Sylvania, listed as 1N4702 (circa 1979).

1N4528 semiconductor manufactured by Sylvania, listed as 1N4528 (circa 1979).

1N4418 semiconductor manufactured by Sylvania, listed as 1N4418 (circa 1979).

1N5086 semiconductor manufactured by Sylvania, listed as 1N5086 (circa 1979).

1N5010A semiconductor manufactured by Sylvania, listed as 1N5010A (circa 1979).

1N4879 semiconductor manufactured by Sylvania, listed as 1N4879 (circa 1979).

1N4786A semiconductor manufactured by Sylvania, listed as 1N4786A (circa 1979).

1N4701 semiconductor manufactured by Sylvania, listed as 1N4701 (circa 1979).

1N4527 semiconductor manufactured by Sylvania, listed as 1N4527 (circa 1979).

1N4417B semiconductor manufactured by Sylvania, listed as 1N4417B (circa 1979).

1N5085 semiconductor manufactured by Sylvania, listed as 1N5085 (circa 1979).