Rookie Card Upgrade: 1909-11 t206 Christy Mathewson
So, as you are probably aware no cards produced before 1933 are technically classified as rookie cards. That said, I have sort of adopted the t206 set as my go-to for many of the early stars of the game, such as Christy Mathewson.
It served as a place holder in my collection until one day I could fond a suitable upgrade. Well, I found it.
As for the older Mathewson, it already has a new home waiting for it. Hopefully the new owner enjoys it as much as I did.