Salesman's handbook
Early 180 (Cossor 437) ca 1937
Early 181 (Cossor 137) ca 1937
180 (1938) 14 inch. Sales brochures
180 (1939) 14 inch. Sales brochures
181 (1939) 14 inch with radio. Sales brochures and photos of a surviving set
182 (1938) 14 inch. Sales brochures
183 (1940) 14 inch. Sales brochure
183X (1941) 14 inch. Sales brochure
184 (1939) 12 inch. Sales brochure
190 (1939) 9 inch. Sales brochure
192 (1939) 9 inch. Sales brochure
195 (1940) 20 inch. Here are internal memos about the set
This picture, from a 1950s DuMont brochure, shows Allen DuMont with a prototype set. It looks as if it has a magnifier on the screen, and it is unclear if it is a mechanical or electronic set.
Billboard, December 11, 1943
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