2N2801 semiconductor manufactured by Sylvania, listed as 2N2801 (circa 1979).

2N2800 semiconductor manufactured by Sylvania, listed as 2N2800 (circa 1979).

2N2799 semiconductor manufactured by Sylvania, listed as 2N2799 (circa 1979).

2N2798 semiconductor manufactured by Sylvania, listed as 2N2798 (circa 1979).

2N2797 semiconductor manufactured by Sylvania, listed as 2N2797 (circa 1979).

2N2796 semiconductor manufactured by Sylvania, listed as 2N2796 (circa 1979).

2N2795 semiconductor manufactured by Sylvania, listed as 2N2795 (circa 1979).

2N2793 semiconductor manufactured by Sylvania, listed as 2N2793 (circa 1979).

2N2786A semiconductor manufactured by Sylvania, listed as 2N2786A (circa 1979).

2N2786 semiconductor manufactured by Sylvania, listed as 2N2786 (circa 1979).

2N2784 semiconductor manufactured by Sylvania, listed as 2N2784 (circa 1979).

2N2783 semiconductor manufactured by Sylvania, listed as 2N2783 (circa 1979).

2N2732 semiconductor manufactured by Sylvania, listed as 2N2732 (circa 1979).

2N2731 semiconductor manufactured by Sylvania, listed as 2N2731 (circa 1979).

2N2730 semiconductor manufactured by Sylvania, listed as 2N2730 (circa 1979).

2N2729 semiconductor manufactured by Sylvania, listed as 2N2729 (circa 1979).

2N2728 semiconductor manufactured by Sylvania, listed as 2N2728 (circa 1979).

2N2719 semiconductor manufactured by Sylvania, listed as 2N2719 (circa 1979).

2N2717 semiconductor manufactured by Sylvania, listed as 2N2717 (circa 1979).

2N2716 semiconductor manufactured by Sylvania, listed as 2N2716 (circa 1979).