It has a very interesting history. Some information I found online.
Fort Niagara is a fortification originally built to protect the interests of New France in North America. It is located near Youngstown, New York, on the eastern bank of the Niagara River at its mouth, on Lake Ontario.
In use 1726--present
Controlled by New France 1678-1763
Great Britain 1763-1796
I do not know the value, how ever what I do know is that: You have a very nice token...