Thank you all for the comments!
Well, I have found it in the largest antique store in the world that most of you (or maybe even all of you) visit - eBay
The Koftgari on the other side of the hilt is not so good preserved, as well, as the brown glue... In fact, when the tulwar arrived, almost the half of the Koftgari visible now was hidden beneath very old dirt and patina - the steel patina and the silver patina were both almost black, but have had a different colour (a bit). I have rubbed the hilt with Flitz and have "discovered" a lot of well preserved Koftgari. Dear LOUIEBLADES, I recommend you to make the same with your hilt.
The sword itself was made for business - you can feel it the same moment you take it in your hand. The blade has a solid presence and is extremely well balanced.
I think you are right about etching, but I will leave it as it is in the moment, because I like it the way it is