HI Gary 
That should be your lower hull #.  They don't seem to match up with the upper hull # but some on here have been tracking them.  To at least look for any kind of pattern.
 
Nice find though.   
Jordan
		  
		
		
		
		
		
		
			
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				Jordan Baker 
RHLI Museum, 
Otter LRC 
C15A-Wire3, 1944 
Willys MB, 1942 
10cwt Canadian trailer
			 
		
		
		
		
		
	
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