Samochód pancerny wz. 28

Based on French-built Citroën-Kegresse B2 10CV half-track chassis, the vehicle became the standard armoured car of the Polish Army.

However, due to low speed and problems with reliability, already in 1933 it was decided to return the completed wz.

The final assembly took place in the Centralne Warsztaty Samochodowe works in Warsaw, while armoured plates were delivered by Baildon Steelworks.

During the production run minor changes were made to the design, most notably later cars had sloped armour.

The cars came in one of two basic variants: one armed with a 37 mm Puteaux SA 18 gun, the other with one Ckm wz.