Hello, I have this projectile which I believe is a 37x69r 1 pounder Vickers mk111.  It looks to be dated 11/16 which would be ok for a one pounder, but the marking above which reads JAP  have me puzzled? Is this a British manufacturer or a Japanese contract projectile?  I cant make out any other markings without removing the paint ( I dont think the paint is original).I can find very little about these 37x69r projectiles on the internet any help would be much appreciated 
regards PaulView attachment 183089View attachment 183088View attachment 183087
				
			regards PaulView attachment 183089View attachment 183088View attachment 183087
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