Some old coins are collectible because there are very few of them left in circulation. For certain other coins, the value lies in a minting error which is an imperfection created during their production. Minting errors scarcely occur because there are strict quality control procedures in place for the production process. Below are some characteristic attributes to look for in your collection. 

What Minting Errors Should You Look for in Old Coins?

1. Planchet Errors

A planchet is a small usually round in shape metal disk used to strike coins. The 1943 Lincoln Copper Cent is a prime example of a planchet error and is one of the most highly sought after and valuable "error" coins. It is quite possibly the most expensive error of all. During World War II, copper was swapped out for zinc coated steel to produce cents as copper was reappropriated to make bullets for the war efforts. Therefore, a very limited number of copper planchets slipped through the minting process which is why they are extremely valuable.

                                                                                                                                                                                  2. Die Flaws

A die consists of the dual sided metallic pieces used to strike the planchet during the manufacturing process. One side is used to strike the coin's front or obverse side, while the other side is used to strike the back of the coin or reverse. If there is an issue, it could lead to imperfections such as doubled designs.

A rare and valuable die flaw is the 1955 Doubled Die Obverse Lincoln Cent. It came about due to a problem with improperly prepared dies that show a complete doubled outline of the date and legend several of which were minted in Philadelphia.

3. Striking Issues

Striking is the process of pressing the die into the planchet. Coins with strike errors may feature off-center designs or multiple strikes. Some pieces were also struck with grease or another substance, which made their design blurred. The 1937-D "3-Legged" Buffalo Nickel is a highly valuable striking issue coin which came about by an employee overzealously cleaning the coin which erased the 4th leg.

If you suspect your collection contains an old coin with a minting error, contact Hawaiian Islands Stamp & Coin in Honolulu, HI. As the leading source for expertise in numismatics, this team of specialists offers an inventory of valuables. They also provide honest, professional opinions about the value of coins, gold, and silver. Find out more about their selection online or by calling (808) 531-6251.