2N6468 semiconductor manufactured by Sylvania, listed as 2N6468 (circa 1979).

2N6467 semiconductor manufactured by Sylvania, listed as 2N6467 (circa 1979).

2N6459 semiconductor manufactured by Sylvania, listed as 2N6459 (circa 1979).

2N6433 semiconductor manufactured by Sylvania, listed as 2N6433 (circa 1979).

2N6432 semiconductor manufactured by Sylvania, listed as 2N6432 (circa 1979).

2N6431 semiconductor manufactured by Sylvania, listed as 2N6431 (circa 1979).

2N6430 semiconductor manufactured by Sylvania, listed as 2N6430 (circa 1979).

2N6389 semiconductor manufactured by Sylvania, listed as 2N6389 (circa 1979).

2N6388 semiconductor manufactured by Sylvania, listed as 2N6388 (circa 1979).

2N6387 semiconductor manufactured by Sylvania, listed as 2N6387 (circa 1979).

2N6386 semiconductor manufactured by Sylvania, listed as 2N6386 (circa 1979).

2N6385 semiconductor manufactured by Sylvania, listed as 2N6385 (circa 1979).

2N6384 semiconductor manufactured by Sylvania, listed as 2N6384 (circa 1979).

2N6383 semiconductor manufactured by Sylvania, listed as 2N6383 (circa 1979).

2N6374 semiconductor manufactured by Sylvania, listed as 2N6374 (circa 1979).

2N6373 semiconductor manufactured by Sylvania, listed as 2N6373 (circa 1979).

2N6372 semiconductor manufactured by Sylvania, listed as 2N6372 (circa 1979).

2N6371 semiconductor manufactured by Sylvania, listed as 2N6371 (circa 1979).

2N6360 semiconductor manufactured by Sylvania, listed as 2N6360 (circa 1979).

2N6359 semiconductor manufactured by Sylvania, listed as 2N6359 (circa 1979).