Ed Walsh more or less defined pitching excellence for his era, so any set without him would seem like a mistake. In 1910, Ed somehow led the AL in losses (20) and ERA (1.27) during the same year, which tells you something about the quality of his team's offense! 

This minty-fresh T206 Sovereign grades PSA FR 1.5 due to its rounded corners, horizontal crease at chin height, and modest toning on the reverse. The experts at T206Resources.com show Sovereign 150 as much tougher than more common backs and the PSA population report contains just ten graded examples!