Tulwar for comment

[Jim McDougall]

Originally Posted by Jens Nordlunde

Oh yes, there are traces of inlay.
In the stars as well as in the round stamp.

Well there you have it!!! Thank you Jens, could not see that in original images.
This IS a European blade, not only were these type markings not copied (as far as I recall) by Indian armourers, I do not recall ever seeing latten (gold metal inlay) in such markings.
Obviously Mughal blades had such inlay in cartouches and inscriptions etc. but never used on these rather pedestrian markings.

That central circle has the dentations in surround much like the ones on the sickle marks, and the cogwheels are known in combination as bracketing the dentated arcs. This may be a variation of markings as so commonly seen on Italian blades .