I don't have the time to search right now but I suspect this is French or Spanish from perhaps the 1700s. I know that the real knowledgeable members will be able to give you a definitive answer. Steve
If you could give us the diameter in millimeters and the weight if you have a scale that measures in grams, that would help us (and you) a lot. Steve
What you have here is a French 2 Sol coin. These coins were produced from 1791 to 1793 and bore the portrait of Louis XVI.
Considering you can't make out a date on this coin it probably would be relegated to the bulk foreign coin box. Circulated specimens of these coins are quite common and are worth around $3 according to the Krause World Coin Price Guide.