Penny sells for £72,000 and is now the most expensive copper coin

Coin which is one of four in existence sold at auction after fierce battle between two bidders

U.S. Mint testing new metals to make coins cheaper – The Mercury

The penny could be scrapped, Bank of England governor Mark Carney

US couple struggle to bank huge haul of pennies

What are the most expensive coins? - Quora

Rare 1933 penny brings record $103,000 at Baldwin's

Your penny could be worth $240,000 but you have to look for the

1933 Penny Sets World Record for Copper, Bronze Coin at Auction

Rare 1933 penny brings record $103,000 at Baldwin's

Massachusetts Authorized Cents and Half Cents – 1787 – 1788

What Are The Most Valuable Pennies? 5 Most Expensive Pennies

SEDWICKCOINS BLOG Numismatic Blog: Coin Research, Auction News

Penny sells for £72,000 and is now the most expensive copper coin

The 19 Most Valuable Pennies Ever Sold

1961 Lincoln Pennies: Rare Pennies to Find and Worth Millions