Founded in Miami, Florida, the Miller-Dunn Company became one of America's most innovative manufacturers of commercial diving equipment during the first half of the twentieth century. Best known for its lightweight Divinhood series, Miller-Dunn revolutionized shallow-water diving with helmets designed to provide greater mobility and ease of use than traditional deep-sea diving helmets. The company's original single-window Divinhood was followed by the improved Style 2 and the highly successful Style 3, which saw extensive use by the U.S. Navy during World War II. In addition to its famous shallow-water helmets, Miller-Dunn also manufactured the U.S. Navy Mark V diving helmet during the war, making it the company's only production deep-sea diving helmet. If you own a Miller-Dunn diving helmet, Nation's Attic would welcome the opportunity to discuss purchasing your helmet or including it in one of our international auctions.