The 1991 S 1 cent coin, also known as the 1991 S Lincoln penny, is a highly sought-after coin among collectors due to its rarity and unique features. This particular coin has been authenticated and graded as PR 70 CAM by SGS, making it even more desirable to numismatists. The 1991 S 1 cent coin was minted at the San Francisco Mint, which is known for producing high-quality proof coins. Proof coins are struck using specially polished dies, resulting in a shiny and flawless appearance. The 1991 S Lincoln penny was also struck with an extra pressure, creating sharp details and frosted designs, giving it a cameo effect. The CAM (cameo) designation on the grading by SGS signifies that the coin has a stark contrast between the raised design elements and the flat fields, adding to its overall appeal. As with many coins, the mintage of the 1991 S 1 cent coin plays a significant role in its rarity. In 1991, the US Mint produced a total of 5,429,000 proof coins for circulation, with the majority of them being struck at the Philadelphia Mint. Only a limited number, estimated to be around 750,000, were minted at the San Francisco Mint, making it a scarce find. Despite its low mintage, it is not uncommon to come across a 1991 S Lincoln penny. However, finding one in PR 70 CAM condition is a different story. The grading scale used by SGS ranges from 1-70, with 70 being the highest and most desirable grade. A coin that is graded as PR 70 CAM by SGS means that it is in perfect condition, showing no signs of wear, scratches, or imperfections. The value of the 1991 S 1 cent coin American graded PR 70 CAM by SGS can vary, depending on market demand and availability. However, it is safe to say that this coin commands a significant premium compared to other 1991 Lincoln pennies. It is not uncommon for a PR 70 CAM graded 1991 S Lincoln penny to sell for hundreds or even thousands of dollars at auction or through private sales. One of the reasons why the 1991 S 1 cent coin is highly desirable among collectors is its design. The obverse features the iconic portrait of President Abraham Lincoln, while the reverse displays the Lincoln Memorial. This design was first introduced in 1959 and is still used on the cent coin today. The 1991 S Lincoln penny has an added significance as it was the first year of issue for the coin’s new design. In conclusion, the 1991 S 1 cent coin American graded PR 70 CAM by SGS is a rare and valuable coin that holds a special place in the hearts of coin collectors. Its low mintage, flawless appearance, and historical significance make it a must-have for any serious numismatist. Whether you are a seasoned collector or just starting your coin collecting journey, the 1991 S Lincoln penny is a coin worth adding to your collection.