Sword
 

Dear friends! I want to ask you who knows model of manufacturing of this sword? What designate brands on a handle of a hilt? I'm looking forward to hearing from you. Respect, Alexander.

Very nice infantry hanger, in principle from the 18th century. They saw service in various countries, like Britain and Germany ... even in the U.S.A., during the American Revolution. It is usually called model 1742.
The existing scabbard is an important added value.
The digits on the knuckle guard would be regimental marks.

Yes very nice indeed , the really rare thing here being the scabbard , which is quite a remarkable fid in that condition. Style is certainly consistent with British / German weapons of the period as Fernasndo has stated . The markings dont look British so I would opt for German though I am no expert on German swords.

Not something I am familiar with, but just wanted to compliment you on your macro photography there! Good to see it done well.