I believe it is called an Archer Self Propelled gun.  It was a 17pdr mounted on the chassis of a Valentine tank.  The gun was mounted backwards so that it would better fit.
		 
		
		
		
		
		
		
			
				__________________ 
				Jordan Baker 
RHLI Museum, 
Otter LRC 
C15A-Wire3, 1944 
Willys MB, 1942 
10cwt Canadian trailer
			 
		
		
		
		
		
	
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