The calibre marking appears as 9 mm Scurt (short in Romanian) rather than 9 mm Corto. The Romanian military, at the time an Axis power, also purchased model 1934 (and 1935) pistols. Police pistols may be marked 'PS' (Pubblica Sicurezza).

Pistols taken by the armed forces usually exhibit acceptance marks stamped into the frame on the left just above the grip: 'RE' (Regio Esercito) for the army, 'RM' (Regia Marina) for the navy, or 'RA' (Regia Aeronautica) for the Air Force, always in the form of an Eagle wearing a Royal Crown for the Royal air force. The Fascist calendar commenced on 28 October 1922, so a pistol from 1937 may carry either 'XV' or 'XVI' as its Fascist year. Pistols made during the Fascist Era are marked with their year of manufacture in two forms: the conventional Julian date in Arabic numerals and the date in the Fascist Era in Roman numerals. This model was followed by the M1935, which was similar to the M1934 in most respects, except that it fired a. Beretta did not want to lose a big military contract to their German competitor and designed the M1934 for the Italian Army which accepted it in 1937. In the early 1930s, the Italian army was impressed by the Walther PP pistol. It was designed and purpose-built for the Italian armed forces. Beretta has become one of the world's largest pistol makers and the model 1934 (M1934) was their most numerous product in the World War II era. But it was not until 1915 that, responding to the needs of the military during World War I, they produced their first pistol, the model 1915. Armi Beretta SpA of Gardone Val Trompia has a history in firearms manufacturing reaching back to 1526, when they were established as a maker of barrels.

Beretta date code chart