The Skoda 105 mm Model 1939 (105 mm M.39) was a mountain gun, manufactured by Skoda Works as a companion piece for the 75 mm M.39. This was a revised version of the 100 mm M.16 and 100 mm M.16/19. Like them it was broken down into three loads, each towed by a pair of horses, for transport.
References
Chamberlain, Peter and Gander, Terry. Infantry, Mountain and Airborne Guns