hard to find c. 1930's american single-sided die cut steel porcelain enameled "we light the world" advertising sign fabricated for the otto k. olesen co., hollwyood, ca. the exact sign fabricator/maker is not known. the porcelain enameled sign contains five holes four mounting flush against a flat surface. the sign was likely displayed outdoors, considering the weathered finish and/or discoloration. the centrally located gridded globe features the american continents in red. highly collectible advertising sign. otto k. olesen, was known as hollywood's original illumination engineer. starting with two abandoned military searchlights, he developed his lighting technique and within a few years launched the use of lighting for premieres. he was the first to provide lights for shooting motion pictures inside a studio. he went on to become the first lighting engineer for the hollywood bowl and los angeles coliseum. he provided the lighting for the 1927 grand opening of grauman's chinese theater in hollywood and the 1937 opening ceremony of san francisco's golden gate bridge, which utilized 500 searchlights fed by 30 miles of cable. he also lit expositions, parades, sporting events and parades. it wasn't all premieres and festivities. his mobile equipment was the first on the scene in the disastrous 1933 long beach earthquake. he earned several medals of honor for supplying power for hospitals and lights in the stricken city. he eventually sold off his company in the 1950's. measures approximately 18 inches in diameter.