Hello, 
 
the ''bubbles'' are the holes of the blood capillaries of the horn base 
( for grow it's better !!) cf other picture of a deer horn slice  made in earring 
( + no resin , I already heated a needle and it's ok !) 
 
Where I found resin-glue, it's around the devil head. 
maybe it was later added ? 
 
For the blade shape at the basis, 
I found this sword cane sold as a 19th Irish sword cane, 
the blade is made in the same mode.
		 
		
		
		
			
		
		
		
		
		
		
		
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