M-266 Advertising Slide for 1920's Projector, to be shown in public movie theaters during intermission. This glass slide, by HACHMANN HARDWARE, Bellevue, Iowa, shows an advertisement for a "Combination Phonograph and Radio" and the enjoyment of "Collecting Phonograph Records". Original made by the Kansas City Slide Co. The slide is black and clear with sharp focus...and beautiful! The slide measures 4 inches by 3.25 inches. The photos I took don't do it justice!