For a coin to be considered to be an "antique" it must be 100 years old or older just like any other antique. Though most coin collectors never will refer to a coin as antique.
Go to your local coin antique or coin shop.
Old French coins would be called Francs. now the currency of money there is called Eros, but very old French coins were called Francs. Singular is Franc. Plural is Francs.
Coin shop.
The exact age of the coin is not as important as if it is no longer in circulation and how many were available. That said, any coin 100 years of age or older is worth researching online, and then taking to a coin dealer.
Pannies. 1990 Pannies.
Antique is worth more money.
Antiques by definition ARE old.
because its an antique
You can find antique coin delaers in Burke, VA on the following website: http://www.coin-collecting.info/dealer/Burke-Virginia.html. They also have useful tips.
Antique. You spelled it right.
Fossil is a synonym of old and antique and begins with an F.
You can find old coins at antique shops, coin dealers, online marketplaces like eBay, and coin shows. You may also consider joining coin collector forums or groups where members buy, sell, and trade coins. Additionally, keep an eye out for estate sales or auctions that may have coin collections available for purchase.