Heritage Auction currently has the Babe Ruth game worn "Called Shot" 1932 World Series Jersey on sale this month, with estimates it being worth $30mill.

I stumbled across this video, which goes through how the MeiGray Group authenticated the jersey to that exact game. Previously, this jersey was not authenticated to the game, so they had to put in the work to confirm. They reference a ton of images of the game and carefully examined the jersey to conclude it was an exact match.

Check out 12:36 - 19:30 to listen how Barry Meisel (COO of MeiGray Group) explains the process.

Very interesting stuff.

https://www.youtube.com/watch?v=4dc10jWAboA