Just a word of caution. This may actually be an example the Schneider commercial 120mm M-1911 howitzer sold to Belgium, Bulgaria, and Serbia, a weapon which was for all intents and purposes identical to the Russian M-1910. There was also a French M1915 120mm field howitzer, and the Bulgarians had an M-1907 120mm Schneider field howitzer, which was very similar to the later weapons.