I have a mid 18th century British coin with "paine warranted" imprinted across the face of the coin. Its been handed down the family from the oldest child to the oldest child, at least that's what I've been told. Does this mean anything to anyone ? Google doesn't help.
You could have a Conder Token.
In the 18th c. the English economy heated up, and there was a demand for more coinage ( a hotter economy means more transactions, and more transactions need more coins), The government was unable and unwilling to create more coinage, so individual merchants and other businesses stepped in to fill the gap, and had their own tokens made up. They were used roughly from 1787 to 1800, when finally the government stepped up production, putting a steam engine to work stamping coins.
They are named for an early collector, James Conder, who wrote a standard guide to them. But other guides exist, like Dalton Hamer's Provincial Coinage of the 18th Century, here online