Nice coin. Krause says this about it: "5 Kori coins were issued with reeded edges until 1928AD, which is when the security edge was introduced. Due to counterfeiting, the government recalled pieces and added lettering as a mark of authentication." Are you sure it is genuine? I wouldn't have a clue.
I have no idea, truthfully. I just picked it up because it was cheap & caught my eye. It's definitely silver though. The dealer I got it from is knowledgeable & has an impeccable reputation but you know how that goes sometimes.
my 2016 Krause says it's India/Princely States KM# (Y#53a) 1928-1935 ??? yours looks at least XF-AU. $30-33 ? .937 silver, weight- 13.87 g. or 0.4178 oz.
I have one of these, dated 1929, along with a 1 kori dated 1666. They are neat coins, does yours have the security edge or reeded edge?