Indian script on British sword

[Matt Easton]

Hi guys,
I was wondering whether the following script means anything to anyone here? I believe that the letters equal I-F-E (probably) in phonetic English? Perhaps these equate to initials (though I cannot find anyone to match those initials in the regiment this sword comes from - the Coldstream Guards, circa 1855).
However, perhaps someone here knows some other meaning for those letter together?

Thanks,
Matt