It looks suspiciously like a wootz blade in my view...
In addition the cartouche now almost completely obliterated looks like an Assad Ullah style for which you may like to look at
http://auctionsimperial.com/om-the-p...f-assad-allah/
I find the ears of the elephant a bit strange as they look likely to cut into the sword hand..and the finials look peculiar since they appear to be inverted. Odd that the hilt has a chunk of bone added ...I wonder is this hilt largely added to and played with...?