Ahh this piece again!  I too have seen & handled it a few months ago... It is certanly interesting!
My perception in hand was a recently buffed mono steel blade from earlyish  20th century combined with an interesting cast head of some form, also combined with a badly cut & decorated piece of sheet brass pinned through with a single copper boat building nail or similar. It seemed to wrap over the bolster rather than fit to it.  I presumed the cast head came from some other non Khyber sword item, added to the blade & with the sheet added to pull the design together..
I guess your at least the 4th owner in 4 months which isnt so bad as at least two of the others were proffesional dealers who etched it with ferric chrloride hoping to find wootz... {I am sure incidently  there both members of this forum to. 

 } Then the acid wasnt neutralised to allow it to badley re patina { or rust.} slighty before resale to the next hopefull dealer or  collector. , till finaly it reached ebay & your good self.
The handle is loose & rateley on the single nail pivot.  I assumed the marrige of 3 parts was probably western due to the lack of traditional feeling.  But certanly still dramatic!   But I could be wrong & indeed perhaps thats the current level of some "chicken street" work, I dont know Ive never been there. 
 
I thought it was an interesting piece , very unique head on it & certanly a "massive" piece, its value? Thats up to the person who pays for it I guess?
Spiral