The 'Bison'... or officially the sIG33(Sf) auf Panzerkampfwagen I Ausf B was developed to provide armoured infantry with direct fire support from an armoured platform.
To do this the turret and superstructure of a Panzer IB was removed and a box like gun shield, open at the top and rear was built on the hull. The 15cm sIG heavy infantry gun was then mounted within the armoured box.
38 were converted in 1940 and proved highly effective in combat.
This model is a faithful reproduction of a German 'poster AFV' of the 1940 campaign in France.