Keywords: 13pdr9cwtThornycroftLorryDuxford2003.jpg Photograph of restored British QF 13 pounder 9 cwt anti-aircraft gun World War I vintage on Mk III mounting on a Thornycroft Type J lorry <br>The lorry's sideboards are opened out into the usual position when the gun was in action and the jacks behind the cab are extended and lowered for stability <br>On display at Imperial War Museum Duxford England Digital image supplied to the uploader user rcbutcher by author Uploaded with author's consent 2003 Photographer does not wish to be credited but grants permission for free use Public Domain QF 13 pounder 9 cwt Duxford Thornycroft military vehicles Land Warfare Hall Imperial War Museum QF 13 pounder 9 cwt Early self-propelled artillery and assault guns |