I am no expert, but I can do my homework. I know that an 80 year old bat can lose a lot of weight from when it was first manufactured (I've seen 5 ounces and heard of more.) I know Zinn Beck bats that have lost 6 ounces. I know Babe Ruth used Zinn Beck bats, though not nearly as common as 125's. That is what I know. Except for bats that come with ironclad provenance (and those are VERY scarce if you look at MEARS database and talk to Taube,) who knows for sure whether any Babe Ruth bat was ever used by him? I don't. Neither do you.