We have been able to find very little information on the Vitali 1910 automatic pistol, but we did have the opportunity to take a look at one recently. It is very clearly marked Vitali 1910 Terni, but bears no other markings whatsoever. The gun is much more typical of its era than the Hino-Komuro, with a C96 Mauser-type recoil operated mechanism. The slide and barrel recoil together for a short distance before the slide unlocks and continues backwards from inertia to eject the empty case and load a new cartridge. The design uses a large external hammer, which is hidden between the sides of the slide, probably to prevent it from snagging on holsters or clothing. You can find more information and photos of this gun at: http://www.forgottenweapons.com/italian-vitali-1910-pistol