2N5464 semiconductor manufactured by Sylvania, listed as 2N5464 (circa 1979).

2N5462 semiconductor manufactured by Sylvania, listed as 2N5462 (circa 1979).

2N5461 semiconductor manufactured by Sylvania, listed as 2N5461 (circa 1979).

2N5458 semiconductor manufactured by Sylvania, listed as 2N5458 (circa 1979).

2N5457 semiconductor manufactured by Sylvania, listed as 2N5457 (circa 1979).

2N5454 semiconductor manufactured by Sylvania, listed as 2N5454 (circa 1979).

2N5453 semiconductor manufactured by Sylvania, listed as 2N5453 (circa 1979).

2N5452 semiconductor manufactured by Sylvania, listed as 2N5452 (circa 1979).

2N5451 semiconductor manufactured by Sylvania, listed as 2N5451 (circa 1979).

2N5450 semiconductor manufactured by Sylvania, listed as 2N5450 (circa 1979).

2N5449 semiconductor manufactured by Sylvania, listed as 2N5449 (circa 1979).

2N5448 semiconductor manufactured by Sylvania, listed as 2N5448 (circa 1979).

2N5447 semiconductor manufactured by Sylvania, listed as 2N5447 (circa 1979).

2N5446 semiconductor manufactured by Sylvania, listed as 2N5446 (circa 1979).

2N5445 semiconductor manufactured by Sylvania, listed as 2N5445 (circa 1979).

2N5444 semiconductor manufactured by Sylvania, listed as 2N5444 (circa 1979).

2N5421 semiconductor manufactured by Sylvania, listed as 2N5421 (circa 1979).

2N5420 semiconductor manufactured by Sylvania, listed as 2N5420 (circa 1979).

2N5419 semiconductor manufactured by Sylvania, listed as 2N5419 (circa 1979).

2N5418 semiconductor manufactured by Sylvania, listed as 2N5418 (circa 1979).