It is, Camionetta SPA,43 Sahariana
This Vehical based on the modified chassis of the Autoblinda 41 (armoured car model 41) was developed for long range desert reconnaissance. A variety of weapons were carried by thses vehicals: these consisted of the 20mm Breda AA gun, 20mm Solothurn anti-tank gun, and 47mm AT gun. All of these vehicals were also armed with the 8mm Breda machine gun.
P.28 Self propelled Anti-tank and Anti-Aircraft guns by Peter Chamberlan and John Milsom
It was a special addation, for 2 reasions, I do not normaly do 2 posts in a day, and the subject matter was a photo request.