"Butcher Blade". 
There were also serrated daggers. The sawback Bayos came both short and long. In fact, I have a long one FS on EB right now. The most visually impacting are the Swiss M1911s.
Regarding the US Model 1905 E1 - Variant: Even though these US Bayonets were officially classified as M1905 s, the shortened variant was marked 1942-43 in its ricasso, and the tip became _wedge_ shaped, with the open fuller extending to the very tip. (Kiesling Vol. 3 #539). Very different to the "Butcher Blade", which is more lance-like, with a 'closed"fuller.
BTW: would you know if the US Model 1905 also fitted  Krags? That's where they started, trying to make existing Krag Bayos fit any new rifles.
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					Originally Posted by whistlinbill
					
				 
				This first bayonet started life as a Model 1942 US bayonet with a 16" blade.  It fits a 1903 Springfield or M-1 Garand.  In late 1942 it was decided to cut the blades down to 10" long--some were cut with a spear point, others with a sort of "butcher knife" point, like this specimen, and others with a clip point.  They are illustrated in: Cole, Book III, p32, Janzen p225, #2.  The second bayonet is an Imperial German, Model 1898/05.  It fits a Model 98 Mauser rifle.  Collectors call this one a "butcher knife"; it is illustrated in Janzen, p.86 #1. 
			
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