Help Needed to ID this Old Copper

Found this copper or bronze coin in a bin at an antique store recently. I'd love any help you could offer in identifying it:

 

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You have one sol of Louis XVI (king of France). Rouen Mint (B).

 

Nice. Thanks so much for the id @Siberian Man. Much appreciated.

 

I have some coins of Louis XVI.
Liard 1779.

 

2 sols 1792.

 

12 deniers 1793.

 

And some French coins of revolutionary period.
5 centimes L' An 7 (September 22 1798 - September 22 1799).

 

One decime L' An 5 (September 22 1796 - September 21 1797).