The value of a coin and its potential to make people rich depends on several factors, including rarity, historical significance, demand, and condition.

Some old coins can indeed be worth a significant amount of money, especially if they are rare or have unique qualities.

Coins that are in high demand among collectors or have a historical connection tend to command higher prices. 

Rarity is also a crucial factor in determining a coin's worth. If there are only a few known examples of a particular coin, its scarcity can drive up its price. 

some rare coins have sold for millions of dollars at auctions, these instances are relatively rare. Many old coins, particularly common ones, may not have a substantial increase in value over time.

If you want to sell old coins, its time to  research and educate yourself about the market, consult with Old Coin Dealers to sell your old coin at correct auction price.