My first inclination was pop differences. But it looks like they’re pretty close. Mays PSA 8 - 79; PSA 9 - 8; PSA 10 - 0. Williams PSA 8 - 88; PSA 9 - 12; PSA 10 - 1.
So maybe there’s slightly more Williams pieces available, like 10% more at PSA 8 and 50% at PSA 9, and infinity percent at PSA 10, but in raw numbers, it’s not much.
Not sure this is enough to explain the differences that you’re seeing in prices. Except I think my only other comment is that pieces at this level don’t trade very often. Maybe once per year, maybe less. Plus there’s a solid argument that there are a lot of differences even between the 8s. So it’s hard to really get a beat on what they are worth today. I will say that the Mays in PSA 8 has also come down a lot, from a high around $350k a few years ago to around $200k today. So maybe that’s the market starting to correct?
I also think that Mays is in a bit of an extra bubble with his passing, in addition to the standard pandemic runup. Those PSA 8s went from about $40k pre-pandi to $200k today, which is a pretty steep jump at 5x. And it was closer to 10x at the peak.
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Trying to wrap up my master mays set, with just one (!!!) left:
1968 American Oil left side
Last edited by raulus; 12-04-2025 at 11:22 PM.
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