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					Originally Posted by  m606paz
					 
				 
				The Cab, with the hole behind driver. 8,5 x 6,25 Inches 
			
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 Looks like the hole for the speaking tube on a FFW version. See another one here: 
http://www.mapleleafup.net/forums/sh...659#post215659
Jordan Baker has restored one, check his thread in the restoration subforum.