Officine Panerai Firenze, "Marina Militare". Produced in the 1950s. Extremely rare set of five very rare military diving instruments: wristwatch, compass, depth gauge, Morse code device and diving knife, made for the Italian Navy Commandos. 1. Fine and rare, large, water-resistant, stainless steel diving wristwatch, with original water-repellent leather band and buckle.