Counterfeit Detection

Counterfeits are everywhere. Use these articles to stay informed before you buy the coin.

March 1, 2024

2 min read

For Buffalo nickels dated 1921, an “S” mintmark of San Francisco is worth its weight in gold—and then some!

February 1, 2024

2 min read

1893 examples of the Spanish peseta command several hundred dollars in low Mint State, making them an attractive target for counterfeiters.

January 3, 2024

2 min read

Numismatic Guaranty Company recently received a purported example of an 1858 Flying Eagle cent with many red flags.

November 30, 2023

2 min read

The Monroe Doctrine half dollar is among the most affordable classic commemoratives. Examples in low Mint State can be found for under $100.

November 1, 2023

2 min read

The Oregon Trail half dollar, struck from 1926 to 1939, boasts a celebrated design. Over 200,000 were sold, and most survivors are mint state.

November 1, 2023

2 min read

To find a variety mint error is exceptionally rare. When the variety is the “King of Doubled Dies,” that premium skyrockets.