The Decima Flottiglia MAS (Decima Flottiglia Motoscafi Armati Siluranti, also known as La Decima or Xª MAS) (Italian for "10th Assault Vehicle Flotilla") was an Italian flotilla, with marines and a commando frogman unit, of the Regia Marina (Royal Italian Navy). These were the commandos who employed the one-man submarines. After 1943, the part of the Decima MAS which was stationed in the north of Italy joined the Mussolini government and fought alongside the Germans until the end of the war. This helmet dates to that period, circa 1944. The La Decima symbol (a dark red Roman numeral X above the insignia) is correctly hand-painted onto the left side of the helmet above and behind the left ear, which is correct. Chinstraps removed but otherwise complete and in very fine condition. Extremely Rare Italian special forces helmet, almost impossible to find originals.