What would you grade it and how much do you think its worth?? I checked ebay but prices vary greatly. http://i843.photobucket.com/albums/zz360/rrahman1/OneRupeeBack.jpg http://i843.photobucket.com/albums/zz360/rrahman1/OneRupeeFront.jpg
With that level of corrosion, its basically worth bullion value, It contains .1874 ounces of silver (.500). They had a mintage of 91 million so are not really rare. I believe these were counterfeited a lot, check the edge if it straight up/down reeding (like on US quarters) its fake, They used a "security edge" that had a groove in the middle of the reeding.
That coin is a candidate for conservation. Soak it in something & get that green corrosion to loosen-up.
