Jens, I know very little about Indian swords unfortunately (but willing to learn). As I mentioned the length of the tulwar makes it look like an estoc but the tip should be sharper and the blade should have a slight taper to penetrate and expand the chinks in the chainmail. The steel also needs to be very hard. I know they used chainmail in India which is helpful in hot climates as air is allowed to circulate. Guess there would be a Mughal connection. Det kanske finns ett online foto från samlingen på svärdet du såg?