I saw it when it was up and think it has been listed multiple times but can't quite recall.
My first thought was that Lucky Strike took an existing generic image of a ballplayer and just put Ty Cobb's name on it. I thought that maybe there were others with the same image but just other player's names on the caption. Or perhaps another with a similar generic image but with Babe Ruth or Christy Mathewson's name, etc? My other thought was reprint. I don't know what it is but it seems too crude for 1926. Something just off about it.
Anyway, it's a piece that obviously deserves some more research. If this is from 1926, interesting to note how much more detailed and elaborate their advertising became in 1928. We've all seen these, right?