For numismatists, finding both rare banknotes and coins is a lucrative hobby, as many pieces can fetch high prices at auction. However, acquiring them requires not only a keen eye but also extensive knowledge.

Over the years, millions of coins of various denominations have circulated denominations, so finding the perfect piece can take time; However, valuable coins worth having in collections are still in circulation. Such is the case of the Roosevelt dime, which was minted with the image of the 32nd President of the United States, Franklin D. Roosevelt, to pay tribute to the president. Coin production in the United States is usually carried out at different mints, and depending on its origin, it is assigned a mint mark. In this case, Philadelphia coins have a "P" as their mint mark, San Francisco coins an "S," Denver coins a "D," and West Point coins a "W."

However, according to Jaime Hernandez, editor of the Professional Coin Grading Service (PCGS) price guide, Roosevelt coins reached a production of 150,000 in Philadelphia in 1982, and these were unminted.

In this case, unminted coins are often highly sought after by collectors because they are uncommon. If you have one, you might be able to sell it for between $300 and $2,000.

Although everything will depend on the coin's condition and its PCGS grade, because the higher the grade, the more valuable it will be on the market.

According to Heritage Auctions records, in 2004 a coin was sold Roosevelt dime graded MS68 at $2,185. “The numerical grades MS-60 to MS-70 are used to indicate a commercially minted coin that has never been in circulation. “A coin in mint condition can range from one with marks (MS-60) to a flawless specimen (MS-70),” explained PCGS.