Your arguments appear to hold well, and I trust you guys are more experienced than me (it would be hard not to).
However, you have seen my arguments and explanations from the mechanical point of view. And unless I have another good explanation on how those grooves were made, I will still be convinced it is a recent fake.
The argument there are many blades with grooves like this is not very valid as
1. maybe there aren't that many
2. maybe all that are, are fakes.
Indians started faking weapons since 19th century.
Anyhow it would be quite boring if we all agree... right?!
