The number on the tag has been obscured but it seems to be.. CT17__3, or CT19__3. The unit is a Stewart Warner, 675-E, and also  J-8. Tag say LV7 FORD, Ford Canada. Adaptor, speedometer. 
It appears that you are correct Grant, its for a two speed axle. Using your information I found a similar unit on EBay. Thanks for your help.
		 
		
		
		
		
		
		
		
		
			
				  
				
					
						Last edited by Bob Phillips; 12-03-22 at 15:30.
					
					
				
			
		
		
		
	
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