The Korona Series III camera was manufactured by the Gundlach Optical Company in circa 1900. Designed as an improvement over the earlier models (except for the extended bellows) but with a reversible patent swing-back. It also can accommodate a special bed for use with wide angle lens which could be purchased separately and attached to this camera as an option. The camera was constructed of wood with a seal grain cover. It has Rack and pinion focus with a rising and falling wood front. The hardware is nickel plated and highly polished. Spring actuated ground glass focusing screen to accept Korona plate holders. A reversible brilliant finder and two tripod sockets. This one had a fold down cross hair view finder as you can see on top. In its original configuration it was fitted with an instantaneous symmetrical lens or a Turner-Reich lens housed in a model F automatic shutter. The camera was available in two sizes to take either 4 x 5 or 5 x 7. Price in 1902 was $22 and $27 respectively. The company roots can be traced to 1879, when Ernst Gundlach and Lewis R. Sexton started working on optical goods manufacturing and trading. The Gundlach Optical Company name was registered in 1884 after Lewis died. In 1895 Ernst left the company, but it continued to bore his name. In 1896 Gundlach Optical acquired the Milburn Korona Company (founded in 1894). Later, in 1902, the company acquired another business - Manhattan Optical Company and the combined establishment was renamed to Gundlach-Manhattan Optical Company. The name was changed again several times: first to Gundlach Manufacturing Corporation, then to Seebold Invisible Camera Company, and finally to Dynamic Optics Inc., which closed its doors in 1972.