When it comes to autographs in the sports world, there are plenty of ways that collectors and the autograph industry itself has helped commodify ink.
In other words, there are a number of common items that are commonly signed that help us all figure a common value that we’d expect to pay or expect to get if we have to sell something we own. Jerseys, balls, helmets, cards, photos — there are a lot of ways to collect sports autographs.
But for celebrity autographs, it’s a lot less complicated as the 8-by-10 photo is arguably the most-commonly solid piece across the whole spectrum of television, movies and others of note who we might find, say, at a comic book convention or other similarly organized signing session. Not all films have massive toy lines, not all celebs have book deals and TV shows often don’t have posters you can find all that easily.