This unique conversion was built by the field workshops of Schw. Panzerjäger Abteilung 653 in Galicia / Poland in late Spring 1944 and was used to provide AA protection for the headquarters.
The turret was constructed from armour plates salvaged from wrecked halftracks and housed a 2.0cm flakvierling 38 on a modified mounting. Ammunition boxes were stowed in racks down both sides of the rear hull.
The vehicle was lost during the Soviet offensive of September 1944.