all original jumbo "mazda c" coiled tungsten "tipped" industrial light bulbs with threaded mogul bases designed and fabricated by or for the general electric company, schenectady, ny. mazda was a trademarked name created by the shelby electric company for incandescent light bulbs. the name was used from 1909 through 1945 in the united states by shelby and later general electric. the company chose the name due to its association with [ahura] mazda, the transcendental and universal god of zoroastrianism whose name means "[wise] lord " in the avestan language. in 1909 the mazda name was created for the shelby electric company's new high end product: tungsten filament light bulbs. the brand was continued after shelby was purchased by general electric in 1914 due to its brand recognition and association with higher quality tungsten filament bulbs. general electric also licensed the mazda name, socket sizes, and tungsten filament technology to other manufacturers in order to set a standard for lighting. bulbs were soon sold by many manufacturers with the mazda name attached, including their chief competitor westinghouse. the company advertised their new tungsten bulb standard with paintings by maxfield parrish. the company dropped the campaign in 1945 in the face of competition from japan. the oversized light bulbs date to the 1920's-1930's. the original boxes and packing material left intact. the light bulbs were discovered under a stairwell at the old chicago stadium during its demolition. priced individually.