Cryptocurrency may sound Greek to many traditional coin and bank note collectors, but physical cryptocurrency is linked to coin collecting and is increasingly becoming a big business. You might view cryptocurrency as some futuristic form of numismatic collectible. You might view it as a gimmick that will fade away, as did telephone card collecting. In fact, the major third-party certification services are grading and encapsulating physical cryptocurrencies, while the largest U.S. numismatic auction houses hold special sessions at which crypto coins are sold.

In 2023, Heritage…