You’ll be surprised how many bargains will be found at both yard sales and flea markets. At yard sales and flea markets – Many people have no idea which coins are rare and they often end up selling them unwittingly in a rummage sale or flea market.I’ve found many old and obsolete coins by searching for them in rolls of coins. In rolls of coins – Roll hunting is one of the best ways to find old coins, and sometimes the pieces you’ll find are quite valuable.Here are 4 of the best places to find rare pennies: