the best way is put this stuff to an antique shop or silver dealer shop, especially silver dealer shop, coz they normally have some kind of "water" to text silver or not
the best way is to break off a little bit, melt it into a bullet and shoot a werewolf with it. If the werewolf dies, it's silver. If not, RUN!!
you can buy a DIY silver testing kit yourself, rather than go off the word of an antique dealer. If it is silver - thats an absolutely stunning piece. I'd buy it
See if there's any markings on it at all - compare to http://www.925-1000.com/AngloIndian_01.html if you find some. Looks too nice a piece to not be hallmarked if it were silver, even if made in India.
Actually come to think of it - it actually looks a bit like a Games Workshop model... (shudders at old memories of stacking toy soldiers...)