Privy marks have appeared on coins for centuries, some of the first appearing on English coinage under King Edward III’s rule in the 1300s. However, these distinctive features have been popping up on a bevy of United States coins in recent years, giving rise to many thinking that this medieval practice is a newfangled type of coin art. Privy marks began splashing onto United States coins in 2019, when the American Innovation Dollar series first made use of a gear-shaped privy mark. The practice of implementing privy marks exploded in the 2020s, when a litany of American Silver Eagles and other coins incorporated these artistic flourishes.
It’s important to note what privy marks are and are not. A privy mark is a small artistic element that may denote a special occasion, anniversary, or other circumstance relating to the coin, its year of issue, or why it was struck. In the case of the United States Mint, privy marks have become pseudo-commemorative in nature, with many in the numismatic hobby believing they represent distinctive issues. In other words, a collector would need to acquire every iteration of the various 2025 American Silver Eagles with privy marks to have a truly complete representation of all American Silver Eagles produced in 2025. Of course, this instills more expense and more challenge in completing said set of coins.
What privy marks are not? They are not mintmarks, as they do not generally denote the coin’s origin of manufacture in the way a mintmark (or, perhaps, the lack of a mintmark) can do. Privy marks may or may not necessarily make a coin rare, but because they generally indicate a special issue or observance of a particular occasion they are considered highly collectible from the numismatic standpoint. Therefore, that can help increase the demand (and consequently, price) for many coins with privy marks.
PCGS Registry Sets recognize many coins with privy marks. As the catalog of U.S. coins and other coinage from around the world increasingly employs privy marks, collectors can expect to see even more opportunities for collecting privy mark coins on the PCGS Set Registry.