2N2614 semiconductor manufactured by Sylvania, listed as 2N2614 (circa 1979).

2N2613 semiconductor manufactured by Sylvania, listed as 2N2613 (circa 1979).

2N2612 semiconductor manufactured by Sylvania, listed as 2N2612 (circa 1979).

2N2610 semiconductor manufactured by Sylvania, listed as 2N2610 (circa 1979).

2N2609 semiconductor manufactured by Sylvania, listed as 2N2609 (circa 1979).

2N2608 semiconductor manufactured by Sylvania, listed as 2N2608 (circa 1979).

2N2605A semiconductor manufactured by Sylvania, listed as 2N2605A (circa 1979).

2N2605 semiconductor manufactured by Sylvania, listed as 2N2605 (circa 1979).

2N2604 semiconductor manufactured by Sylvania, listed as 2N2604 (circa 1979).

2N2603 semiconductor manufactured by Sylvania, listed as 2N2603 (circa 1979).

2N2602 semiconductor manufactured by Sylvania, listed as 2N2602 (circa 1979).

2N2601 semiconductor manufactured by Sylvania, listed as 2N2601 (circa 1979).

2N2600 semiconductor manufactured by Sylvania, listed as 2N2600 (circa 1979).

2N2599 semiconductor manufactured by Sylvania, listed as 2N2599 (circa 1979).

2N2598 semiconductor manufactured by Sylvania, listed as 2N2598 (circa 1979).

2N2597 semiconductor manufactured by Sylvania, listed as 2N2597 (circa 1979).

2N2596 semiconductor manufactured by Sylvania, listed as 2N2596 (circa 1979).

2N2595 semiconductor manufactured by Sylvania, listed as 2N2595 (circa 1979).

2N2594 semiconductor manufactured by Sylvania, listed as 2N2594 (circa 1979).

2N2588 semiconductor manufactured by Sylvania, listed as 2N2588 (circa 1979).