Hi there, 
 
These charmingly nice things invented for maximum cruelty can be found in contemoprary illustrations in 16th and 17th century books on fireworks and artillery, e.g. 
Hans Georg Schirvatt: Kunst- u. Artilleriebuch,  1622, Cod. icon. 232, Bavarian State Library Munich. 
 
Michael
		 
		
		
		
			
		
		
		
		
		
		
		
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