1N4761 semiconductor manufactured by Sylvania, listed as 1N4761 (circa 1979).

1N4677 semiconductor manufactured by Sylvania, listed as 1N4677 (circa 1979).

1N4491 semiconductor manufactured by Sylvania, listed as 1N4491 (circa 1979).

1N4410A semiconductor manufactured by Sylvania, listed as 1N4410A (circa 1979).

1N5064 semiconductor manufactured by Sylvania, listed as 1N5064 (circa 1979).

1N4985 semiconductor manufactured by Sylvania, listed as 1N4985 (circa 1979).

1N4855 semiconductor manufactured by Sylvania, listed as 1N4855 (circa 1979).

1N4760A semiconductor manufactured by Sylvania, listed as 1N4760A (circa 1979).

1N4676 semiconductor manufactured by Sylvania, listed as 1N4676 (circa 1979).

1N4490 semiconductor manufactured by Sylvania, listed as 1N4490 (circa 1979).

1N4410 semiconductor manufactured by Sylvania, listed as 1N4410 (circa 1979).

1N5063 semiconductor manufactured by Sylvania, listed as 1N5063 (circa 1979).

1N4984 semiconductor manufactured by Sylvania, listed as 1N4984 (circa 1979).

1N4854B semiconductor manufactured by Sylvania, listed as 1N4854B (circa 1979).

1N4760 semiconductor manufactured by Sylvania, listed as 1N4760 (circa 1979).

1N4675 semiconductor manufactured by Sylvania, listed as 1N4675 (circa 1979).

1N4489 semiconductor manufactured by Sylvania, listed as 1N4489 (circa 1979).

1N4409A semiconductor manufactured by Sylvania, listed as 1N4409A (circa 1979).

1N4983 semiconductor manufactured by Sylvania, listed as 1N4983 (circa 1979).

1N4854A semiconductor manufactured by Sylvania, listed as 1N4854A (circa 1979).