1N5560B semiconductor manufactured by Sylvania, listed as 1N5560B (circa 1979).

1N5433 semiconductor manufactured by Sylvania, listed as 1N5433 (circa 1979).

1N5360 semiconductor manufactured by Sylvania, listed as 1N5360 (circa 1979).

1N5272A semiconductor manufactured by Sylvania, listed as 1N5272A (circa 1979).

1N5233B semiconductor manufactured by Sylvania, listed as 1N5233B (circa 1979).

1N5861B semiconductor manufactured by Sylvania, listed as 1N5861B (circa 1979).

1N5681A semiconductor manufactured by Sylvania, listed as 1N5681A (circa 1979).

1N5560A semiconductor manufactured by Sylvania, listed as 1N5560A (circa 1979).

1N5426 semiconductor manufactured by Sylvania, listed as 1N5426 (circa 1979).

1N5359B semiconductor manufactured by Sylvania, listed as 1N5359B (circa 1979).

1N5272 semiconductor manufactured by Sylvania, listed as 1N5272 (circa 1979).

1N5233A semiconductor manufactured by Sylvania, listed as 1N5233A (circa 1979).

1N5860B semiconductor manufactured by Sylvania, listed as 1N5860B (circa 1979).

1N5681 semiconductor manufactured by Sylvania, listed as 1N5681 (circa 1979).

1N5560 semiconductor manufactured by Sylvania, listed as 1N5560 (circa 1979).

1N5419 semiconductor manufactured by Sylvania, listed as 1N5419 (circa 1979).

1N5359A semiconductor manufactured by Sylvania, listed as 1N5359A (circa 1979).

1N5271B semiconductor manufactured by Sylvania, listed as 1N5271B (circa 1979).

1N5233 semiconductor manufactured by Sylvania, listed as 1N5233 (circa 1979).

1N5859B semiconductor manufactured by Sylvania, listed as 1N5859B (circa 1979).