National Museum of Finland. Helsinki. A humble sword

[Elmereya]

good day.
in the exposition of this museum there are several bright swords, which are described in various monographs and so on, for example the sword from Sountaki .. but about this sword that I noted in the photo, for some reason no one has ever explained anything, probably simply because on there are no beautiful ornaments and unusual devices, crosshairs and pommels,. but he also looks not quite standard, I wonder if there will be any opinions on this subject ,?
with respect .
(photo taken from the Internet)