1: Introduction Learn about 3 rare dimes and a rare bicentennial quarter worth $640 million each that are still in circulation.

2: 1942/41 Mercury Dime The 1942/41 Mercury dime is a rare error coin worth $640 million. Keep an eye out for this valuable piece in your change.

3: 1916 D Mercury Dime The 1916 D Mercury dime is another rare and valuable coin worth $640 million. Check your pocket change for this treasure.

4: 1894 S Barber Dime The 1894 S Barber dime is one of the rarest coins in existence, valued at $640 million. Keep a lookout for this gem.

5: Bicentennial Quarter The rare Bicentennial quarter could be worth $640 million. Check your spare change for this valuable collector's item.

6: Where to Find Them Search through your change, visit coin shops, and attend coin shows to potentially find these rare dimes and the bicentennial quarter.

7: Value and Rarity The value and rarity of these coins make them highly sought after by collectors and enthusiasts worldwide.

8: Getting Them Appraised To know the true value of these rare coins, consider getting them appraised by a professional coin expert or dealer.

9: Happy Hunting! Keep your eyes peeled when handling coins to potentially come across these 3 rare dimes and the bicentennial quarter worth $640 million each still in circulation.