This is a beautiful example of these distinctive Indian swords, which is simple, unpretentious, and quite likely from northern regions in India, Rajput.
These long, straight blade swords actually descended from the old Indian sword, termed in Sanskrit 'khanda' (-loosely, cut, divide etc) which is often regarded as a collective term for 'sword' in Sanskrit.
The term 'firangi' is another loose and collective term taken to refer to 'foreign' and refers to the European or other trade blades often found in these swords hilted in the hilts known as 'Hindu basket hilts'.
The earliest examples of 'khanda' are swords depicted in the narrative frieze decorating the portico of the Rani Gumpta cave on Udayagiri hill in Orissa from 2nd century CE. (P.Rawson, "The Indian Sword", 1968.p.6). These early Indian swords suggest the origins of the 'khanda' with that, and of course the form diffused widely in India with a simpler hilt form than the more familiar 'Hindu basket hilt likely from European contact in 17th c.(p.28, Rawson, op.cit.).
The khanda form into the Maratha dominions in Deccan; the Rajputs and Sikhs in the north and the Nairs in the south according to Rawson.
The Marathas organized in a national state in the second half 17th c. with Shivaji as the leader. This of course likely was the origin of the swords association to him.
The khanda is highly revered from both traditional and religious aspects and as noted venerated prestige virtually it seems in all these factions of Indian culture.
The old Indian versions of Khanda were broadswords, as described :
"..tradition has hallowed the two edged khanda of Mewar, investing it with a mysterious origin. It is supposed to be the enchanted weapon fabricated by Viswascarma with which to be girded the founder of the race and led him forth to the conquest of Chittor".
"Annals and Antiquities of Rajasthan", J.Tod, 1898,p.55
With the development of the expanded elements of the 'basket hilt' by the late 17th c. through the 18th long straight single edged cavalry blades began to appear on these, and they were most certainly fighting swords. The long stem on the hilts already extant had been intended for two hand use of the sword, though later less prominent vestigial examples are known.
The 'firangi' blades seem to have been mostly European, with German and Italian blades most common, and these seem almost invariably backsword (single edged). While more typically German, we have seen Italian examples which likely came from 18th c. schiavona.
Indian armorers were fully skilled in producing their examples of these blades, thus technically overriding the 'firangi' term, but that is of course irrelevant. In my opinion, 'khanda' remains the most workable term for these aside from the familiar nit picking
This is my single example from years ago when I was studying Indian swords here, and of course likely end of 18th into 19th. Blade is unmarked (unable to see beneath forte reinforce) but surely European.
It is tempting to consider these as being from period of the Anglo-Maratha wars 1775-1819 (the MAHRATTA is old spelling of Maratha). It is really hard to say Maratha or Rajput on these without far more expertise in decoration and other nuances, but these swords are the most compelling of Indian forms, far less ubiquitous than tulwars of course.