HAMILTON AVIATOR Lemania 5100 Military Chronograph
Water Resistance: 10 BAR/ATMOS @ 43mm minus crown
Cyberspace information states that this model was released for the Italian market, additional posts state that it was used by pilots of the Italian Air Force, but no mention that it is military issued. It is housed in the same watch case used by SINN 156B Military Chronographe, it also uses the same dial. design elements based on the Heuer SG1550 Bundeswehr chronographe.