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					Originally Posted by Spunjer
					
				 
				Y 
regarding the notch in the center: 
here's an example with a glass bottle bottom (provenanced 1899 and before). 
			
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 Wow that's also a beauty Ron. Is it yours?
I've also a picture of a moro shield which was offered to the Tropenmuseum in Amsterdam in 2011. I don't know if it's in their collection now though.
It seems to have a metal centre ring.