USN M-1902 Officer summer cap. The item "WW1 or earlier US Navy Officer summer white top cap M-1902 USN" is in sale since Sunday, September 15, 2019. This item is in the category "Collectibles\Militaria\WW I (1914-18)\Original Period Items\United States\Hats & Helmets". The seller is "praefect1964" and is located in Seligman, Arizona. This item can be shipped worldwide.