2N3864 semiconductor manufactured by Sylvania, listed as 2N3864 (circa 1979).

2N3863 semiconductor manufactured by Sylvania, listed as 2N3863 (circa 1979).

2N3862 semiconductor manufactured by Sylvania, listed as 2N3862 (circa 1979).

2N3860 semiconductor manufactured by Sylvania, listed as 2N3860 (circa 1979).

2N3859A semiconductor manufactured by Sylvania, listed as 2N3859A (circa 1979).

2N3859 semiconductor manufactured by Sylvania, listed as 2N3859 (circa 1979).

2N3858A semiconductor manufactured by Sylvania, listed as 2N3858A (circa 1979).

2N3858 semiconductor manufactured by Sylvania, listed as 2N3858 (circa 1979).

2N3857 semiconductor manufactured by Sylvania, listed as 2N3857 (circa 1979).

2N3856A semiconductor manufactured by Sylvania, listed as 2N3856A (circa 1979).

2N3856 semiconductor manufactured by Sylvania, listed as 2N3856 (circa 1979).

2N3855A semiconductor manufactured by Sylvania, listed as 2N3855A (circa 1979).

2N3855 semiconductor manufactured by Sylvania, listed as 2N3855 (circa 1979).

2N3854A semiconductor manufactured by Sylvania, listed as 2N3854A (circa 1979).

2N3854 semiconductor manufactured by Sylvania, listed as 2N3854 (circa 1979).

2N3846 semiconductor manufactured by Sylvania, listed as 2N3846 (circa 1979).

2N3845A semiconductor manufactured by Sylvania, listed as 2N3845A (circa 1979).

2N3845 semiconductor manufactured by Sylvania, listed as 2N3845 (circa 1979).

2N3844A semiconductor manufactured by Sylvania, listed as 2N3844A (circa 1979).

2N3844 semiconductor manufactured by Sylvania, listed as 2N3844 (circa 1979).