Grading turns condition into a number, and the number travels with the card. How completely it does so is visible in a Form 1-A offering circular filed with the SEC in August 2022 for a single-card entity. The offering's asset is described as "a BGS 8-graded 1997 Metal Universe Precious Metal Gems Michael Jordan #23 trading card," and the circular's condition report adds that "the card is preserved in a plastic BGS holder and features sub-grades: 9 for 'Centering,' 8 for 'Corners,' 7 for 'Edges' and 9 for 'Surface.'" That is an overall grade plus four component grades, written into a securities filing as the description of the asset. Nothing comparable exists for a painting or a case of wine, where the equivalent disclosure is a narrative condition statement.
Population data makes scarcity a count rather than a claim. The same filing states that "there are eight BGS 8-graded 1997 Metal Universe Precious Metal Gems Michael Jordan #23 trading cards in circulation." It also sets out the card's original print constraints: the 1997-98 Metal Universe Precious Metal Gems basketball set "consists of cards for 123 players," the cards "were serially numbered up to 100 and produced with green and red foil," with "the first ten numbered cards for a given player" in green foil and "the remaining 90" in red, and the filing states the odds of pulling that particular Jordan card from a 1997-98 pack were "1 in 17,500." A buyer of that card can therefore see a stated print run, a stated distribution rate and a stated count at the specific grade. Almost no other collectible market supplies all three.
The counts have a selection effect built into them, and it runs one way. Grading is a paid service, submitted card by card, and the fee does not scale down for a cheap card. That means a card is only sent for grading when the expected value of the graded card exceeds the ungraded card plus the fee and the shipping and the risk of a disappointing grade. So a population report counts cards that somebody thought were worth submitting; it is not a census of surviving examples. Two consequences follow. A population of eight at a given grade does not mean only eight such cards exist, since ungraded examples in similar condition may sit in collections. And the lower grades are systematically undercounted relative to the higher ones, because a card in poor condition is the one least likely to justify the fee. Reading a population report as a supply figure rather than as a submission figure overstates scarcity.
Because the grade is public and priced, each grade is effectively its own asset. Sales data is organized by card and grade, so the market forms a separate price for the same card at each level of the scale. That is why the grade, and not merely the card, is what a seller advertises, and why resubmitting a card in the hope of a higher grade is a recognized practice. It also means the grade concentrates a great deal of the value in a single private company's opinion. The scale, the standards applied and the population report are each published by the grading company itself, and there is no public authority that reviews them.
The fractional route is the same securities mechanism art uses. Rather than buying a card outright, an investor can buy interests in an entity whose only asset is one card, and that is an offering of securities. The filing quoted above was made under Regulation A, which means the sponsor had to file an offering statement on Form 1-A and could not accept money until SEC staff qualified it. The circular records the terms that come with the structure: the entity buys the card "from our manager," there is "no minimum number of interests or dollar amount that needs to be sold as a condition of any closing," and transfers of interests are restricted, with secondary trading intended through a registered alternative trading system rather than an exchange. The filing also carries the risk factor that matters most for a unique object: there is "no guarantee that the underlying asset will be free of any claims regarding title and authenticity (e.g., counterfeit or previously stolen), or that such claims may arise after acquisition."
What the filing says about the market's own history is worth reading as the filer's characterization rather than as fact. Its market assessment says that "with the development of the serial number system and card grading, what was once a hobby has become a valuable industry," and that "through built-in scarcity and a throwback to childhood collecting, the market has grown thanks to the liquidity that online marketplaces provide." Two of the three drivers it names are structural and durable, the serial numbering and the grading system. The third, online marketplace liquidity, is the one that can withdraw, and a market whose price discovery depends on active online bidding is thinner when that bidding thins out.