First pattern example of the M1898, known as the a/A (alter Art = older model) with scabbard.  This was the first bayonet produced for use on the Gewehr 98 (K98).

These long, slender blades are often called “quillback” or "pipeback" blades, due to the round spine that runs through the blade like the quill of a feather.  These were later replaced by the M1905 "Butcher Blade" models.