Tulwar stamped blade mark question

[Rumpel]

I suppose the thing is that- unlike kaskaras, say, where a bring-back date is often going to be very late 19th c- for UK collectors tulwars could have come from almost anywhere in N India, at almost any time, with very little info to help us sort out the fine details.

I assume most old tulwars in western collections have radiated out from the UK, of course.