Information required for this sword
 

My son in law owns this sword which he thinks belonged to a great uncle who served in India.
Clearly a sabre therefore likely a cavalry troop I suppose.
There are various engravings which need explanation.

Late Imperial Russian officer's saber. Perhaps a shaskha, officers, 1909 pattern. Very nice.

On spine (abbreviated): Zlatoust arms factory, on blade monogram of Nikolai II.

I am not an expert on Russian bladed weapons.

IMHO it looks like a dragoon officer's shaskha mod. 1909, but I don't like a number of things:
- the scabbard is not original, it is from a soldier's saber with a bayonet mount;
- I don't like the inscription on the butt: Zlatoust Arms Factory

For a more qualified attribution, it is necessary to involve specialists in Russian shaskhas.

Here is the original inscription on the blade spine.

Re son in law's sword
 

Many thanks for the information .
I will try and find an expert on Shaskas.

I suppose that these weapons quite often got separated from their original scabbard and indeed the original owner !
My son in law thinks there was a connection to India, seems a bit odd , but Russia was certainly trying to increase their influence there at the end of the 19th century as I understand it.

I would be glad of any further thoughts, of course.

Go to https://forum.guns.ru, they will help you there