Hi Teodor,
As stated by Jim this is a Solingen product, late 18th to early 19th century. The sun, moon and star motifs are typical and often confused with the much more elaborate etchings of Peter Munich. The only maker's mark that I have seen on the same blade as these etchings is J.J. Runkle (1750-1808). I don't know if he is associated with all of these symbols or if a separate engraver made them for a number of manufactures?
Now here is where I get sweaty palms, by not completely agreeing with Jim
. I think this is a shortened blade, from most likely a heavy cavalry backsword. Do you have the measurements? Sweet piece!
All the Best.
Jeff