2N2852 semiconductor manufactured by Sylvania, listed as 2N2852 (circa 1979).

2N2851 semiconductor manufactured by Sylvania, listed as 2N2851 (circa 1979).

2N2850 semiconductor manufactured by Sylvania, listed as 2N2850 (circa 1979).

2N2849 semiconductor manufactured by Sylvania, listed as 2N2849 (circa 1979).

2N2848 semiconductor manufactured by Sylvania, listed as 2N2848 (circa 1979).

2N2847 semiconductor manufactured by Sylvania, listed as 2N2847 (circa 1979).

2N2846 semiconductor manufactured by Sylvania, listed as 2N2846 (circa 1979).

2N2845 semiconductor manufactured by Sylvania, listed as 2N2845 (circa 1979).

2N2838 semiconductor manufactured by Sylvania, listed as 2N2838 (circa 1979).

2N2837 semiconductor manufactured by Sylvania, listed as 2N2837 (circa 1979).

2N2836 semiconductor manufactured by Sylvania, listed as 2N2836 (circa 1979).

2N2835 semiconductor manufactured by Sylvania, listed as 2N2835 (circa 1979).

2N2832 semiconductor manufactured by Sylvania, listed as 2N2832 (circa 1979).

2N2831 semiconductor manufactured by Sylvania, listed as 2N2831 (circa 1979).

2N2807 semiconductor manufactured by Sylvania, listed as 2N2807 (circa 1979).

2N2806 semiconductor manufactured by Sylvania, listed as 2N2806 (circa 1979).

2N2805 semiconductor manufactured by Sylvania, listed as 2N2805 (circa 1979).

2N2804 semiconductor manufactured by Sylvania, listed as 2N2804 (circa 1979).

2N2803 semiconductor manufactured by Sylvania, listed as 2N2803 (circa 1979).

2N2802 semiconductor manufactured by Sylvania, listed as 2N2802 (circa 1979).