Extremely rare 1931 Beretta sn 406556 Axis Pistols p. 272. Royal Navy marked.  This is a very rare and desirable Beretta Model 1931, one of only 8,000 produced. The model 1931 was only manufactured from 1931-34 and was made for the Italian Navy. It was a transitional design between the 1922-23 models and the final designs of the 1934 and 1935 Beretta. The pistol is marked with the RM and Navy anchor on the grips, and shield over BF marking on left side of frame. The pistol itself is somewhat hard to rate as there isn't much actual bluing loss, but there is oxidation throughout, especially on the grip straps. Grips have minor dings but no major defects. Bore has some frost and freckling in the grooves.