This Flames of War item includes one Archer self-propelled gun with crew. The 17pdr was the most effective anti-tank weapon in the British arsenal during World War Two; but mounting a gun of this size proved challenging for design engineers. While their subsequent work would later lead to the development of the Sherman Firefly and the Challenger series of tanks, the Ministry of Supply commissioned Vickers in July 1942 to develop a self-propelled version of the 17pdr using the chassis of the Valentine.
The resulting vehicle, known as the Archer was basically a Valentine chassis fitted with an open topped superstructure mounted above the fighting compartment much like the German Marder series of tank destroyers. The 17pdr was then mounted in a unique way, pointing to the rear of the vehicle. Despite the size of the 17pdr, the final design resulted in a relatively compact vehicle with a low profile.