F.Ruediger books, various german forums with their experts, the ersatz nomenclature is a austrian term not german. Germans didnt use the term Bajonett only for socket bayonets, for normal bayonets were always used the term Seitengewehr. The added numbers as EB33 (Ersatz Bayonet) has nothing with real designation used by Germans it was created by Carter in his books to catalogise the items. b.r.Andy