This paper model is a 152 mm ShKH MODAN vz.77/99, a Slovak upgrade and a variant of the 152mm SpGH DANA with longer range, higher accuracy and rate of fire, the papercraft is created by RW, and the scale is in 1:32.
The DANA is a wheeled self-propelled artillery piece. It is also known as the Samohybná Kanónová Húfnica vzor 77 (ShKH vz. 77) (self-propelled gun howitzer model 77); and was designed by Konštrukta Trenčín and built by ZTS Dubnica nad Váhom in the former Czechoslovakia (now Slovakia).
You can download this paper model template here: 152 mm ShKH MODAN vz.77/99 Wheeled Self-Propelled Artillery Free Paper Model Download [Box] [Gavitex]