Yep, North Indian and at least the blade from late 18th to early 19th century.
It definitely would benefit from some cleaning and etching.
Very nice piece!
PS: While the cartouche may look somehow Ottoman, it has to be remembered that this type of cartouches were common for the whole Ottoman-Persian-Mughal area. Also the cartouche, as well as the scabbard may be later works.
However, like Ariel has noticed, the front bolster with koftgari is rather typical Indian and gives a very good indication about the origins of the knife.
Also the fine watering pattern of the blade may be an indication of its Indian origin but that would become clearer with new etching.