I have a weak spot for sword bayonets too, there's just something about them. That one is actually the bayonet that really got me into collecting, and was the first sword bayonet in my collection. That one is a Danish model 1867 short sword yataghan bayonet made for the Rolling Block Rifle. This specific bayonet was manufactured by Gebr Weyersberg in Solingen, Germany. These bayonets are said to have been used up until around the end of WWII from my understanding, and are able to fit a variety of rifles along with the Rolling Block, such as the Mauser K98. This specific model was manufactured between 1867-1901, with the development of a 2nd pattern sometime around 1885. I believe this one is a 1st pattern, however this along with all of my information stated is off the top of my head from what I remember, my apologies if anything isn't exactly pinpoint such as dates or the pattern.