There is one Hank O'Day from this set graded a 5.5; but it is designated as "Bat at ready, looking at camera". This card does not have that variation listed.
http://www.psacard.com/Cert/20990254
Looks like it's an officially graded card, since I can't see someone breaking the real card out of the shell once it's been graded, only to substitute it with a Conlon.