2N5219 semiconductor manufactured by Sylvania, listed as 2N5219 (circa 1979).

2N5211 semiconductor manufactured by Sylvania, listed as 2N5211 (circa 1979).

2N5210 semiconductor manufactured by Sylvania, listed as 2N5210 (circa 1979).

2N5209 semiconductor manufactured by Sylvania, listed as 2N5209 (circa 1979).

2N5208 semiconductor manufactured by Sylvania, listed as 2N5208 (circa 1979).

2N5204 semiconductor manufactured by Sylvania, listed as 2N5204 (circa 1979).

2N5202 semiconductor manufactured by Sylvania, listed as 2N5202 (circa 1979).

2N5201 semiconductor manufactured by Sylvania, listed as 2N5201 (circa 1979).

2N5200 semiconductor manufactured by Sylvania, listed as 2N5200 (circa 1979).

2N5199 semiconductor manufactured by Sylvania, listed as 2N5199 (circa 1979).

2N5198 semiconductor manufactured by Sylvania, listed as 2N5198 (circa 1979).

2N5197 semiconductor manufactured by Sylvania, listed as 2N5197 (circa 1979).

2N5196 semiconductor manufactured by Sylvania, listed as 2N5196 (circa 1979).

2N5195 semiconductor manufactured by Sylvania, listed as 2N5195 (circa 1979).

2N5194 semiconductor manufactured by Sylvania, listed as 2N5194 (circa 1979).

2N5193 semiconductor manufactured by Sylvania, listed as 2N5193 (circa 1979).

2N5192 semiconductor manufactured by Sylvania, listed as 2N5192 (circa 1979).

2N5191 semiconductor manufactured by Sylvania, listed as 2N5191 (circa 1979).

2N5190 semiconductor manufactured by Sylvania, listed as 2N5190 (circa 1979).

2N5189 semiconductor manufactured by Sylvania, listed as 2N5189 (circa 1979).