Here's another excellent addition to a pair of PCs, my Zack Wheat and Type 1 Photo Collections. It was an auction house victory in 2022 and while it went for a bit more than I had anticipated it was already slabbed and my view on Type 1 Photos is you're much more likely to find a card you need than a unique photo.
Clear portrait vintage photographs are quite hard to beat, although I love me a great action photo, so maybe I have a problem above everything else.