Here is a great advertising clip showing off Sheffield "Sealect" unsweetened evaporated milk. According to the clip, Sheffield was located at 524 West 57th Street in New York, NY. The clip is in good condition and the spring is very strong. The front facing portion of the clip is slightly bent forward from use. There is some rust and oxidation on the surface of the clip, especially around the bends in the metal around the edges.