The awesome thing about flipping through old catalogs is running across random cards and sets that pique your curiosity and make you learn more about the hobby; that's precisely what happened when I saw this 1921 W551 Babe Ruth/Ty Cobb Strip in Mastro's August 2006 catalog.

Turns out it took until pretty recently for the card market to come to consensus and call these cards a 1922 set and I learned that 9/10 baseball player strip card poses are the same between W551 and W514.