This coin comes from a period in India known as the Bengal Presidency. In 1765 emperor Shah Alam gave some possessions in Bengal to the British East India Company, starting the presidency. This coin comes from Shah Alam's successor, Shah Alam II.
There is a distinguishing feature of a fork, trident, or trisul on this coin. Several versions exist with minor differences. A great page with more info can be found over at our friends ChiefaCoins.
These grand old silver coins were minted when Carl XII was king of Sweden, hence the large 'C' monogram on the front. They are nice collectible pieces. Coins that have been authenticated, graded, and encapsulated by PCGS, NGC, ANACS, and ICG are generally worth a little more than 'raw' loose coins.
Here are some approximate catalog values for these coins.
worn: $40 US dollars approximate catalog value
average circulated: $120
well preserved: $300
The coin in our main picture at the upper left is in superb shape, better than our 'well preserved' criteria. It has great color and almost no wear. Its pleasing eye appeal adds to value. It is a $350 coin.