hard to find all original early 1920's intact antique american industrial "do not converse with the operator" factory sign with vibrant cobalt blue lettering
ready-made sign co., new york
very rare all original c. 1920's antique american industrial single-sided porcelain enameled factory employee notification sign designed and fabricated by the ready-made sign company, new york city, ny. the diminutive sign is comprised of heavy gauge die cut steel. the robust factory sign features bold cobalt blue lettering against a mostly white background. the top edge of the factory sign contains two holes for mounting and/or hanging within the vicinity of the factory machine operator. measures 6 x 4 inches.
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