Stereoscope ‘Stereo-Dioskop Model IIIB’, Open Version
Emil Busch took over the optical firm in Rathenow from his uncle Eduard Duncker in 1845. The company began producing photographic devices from 1852 and became known for high-quality instruments and optics. In 1865, it introduced its newly developed wide-angle lens, the Pantoscop.
From 1872, the company continued as Rathenower Optische Industrie-Anstalt vormals Emil Busch A.-G.. In 1927, the majority of the shares was acquired by Carl Zeiss Jena. Busch continued manufacturing cameras but ceased lens production. The company buildings in Rathenow were destroyed at the end of World War II.
