Hey I just got a hold of this coin and I'm not really sure what it is or what it is worth... Here's the pics:
IMO this coin is neither ancient, nor Indian, and not even genuine but I might be mistaken as I am no expert in this kind of coins. Wait for more replies. Good luck.
This is considered Indian, though most contemporary copies (like this one) are possibly made in China. It is a Ramatanka temple token. No real value.
The figure is known by the name "Guru Nanak". Probably makes it easier to find references on the net.