Used DZOFilm Lens Mount Bayonet (Sony E) DZO-ACC2ME B&H Photo
Bayonet - Wikipedia
DZOFilm Lens Mount Bayonet (Sony E) DZO-ACC2ME B&H Photo Video
Germany - Bayonet and scabbard
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E. & F. Horster Model 1898 Knife Bayonet | National Museum of American History