Here are picture examples of divers helmets we are looking to purchase. There were four manufacturers for the United States Navy during peak WWII. Morse Diving, A. Schrader’s & Son, Diving Equipment and Salvage Company (Desco) and Miller Dunn. Morse and Schrader also produced helmets during WWI and earlier. Some foreign makers include Siebe Gorman, C.E Hienke and John Date. There are many more on the list. We can help you identify.