A model 1957 Swiss bayonet. These bayonets are double-edged and unfullered. The blade length is about 9.5 inches, the handle length is about 4.8 inches, giving it a total length of around 14.5 inches. The manufacturer of these bayonets is Waffenfabrik Neuhausen, Wenger. They were originally Issued with the Stgw.57 rifle.