The Jackie memorabilia has definitely blown up. This blotter
has gone up 20X since the movie
42 was released. I think it is a fallout of the rise in card prices. People want vintage Jackie stuff and they can't afford more and more of the cards, so they go for card-adjacent material. It is scattershot, though. I got this booklet-sized magazine for under $30 delivered:
Ruth stuff is strong.
Good snapshots are strong.
Press photos are all over the place.
Team-issued photos of the top postwar stars have risen considerably but are still pretty good values. I was shocked at the two team-issued publicity photos of Jim Brown that sold in SCP last weekend. $2,510 for the 1958 and 1963 base shots that were used to make the team issues that year. Wilt Chamberlain is now a $250-$500 photo, yet I got a 1970 Alcindor for under $50.