I was re-checking 2009 Proof sets and noticed that on one of my sets the third group of windows is missing the panes. I posted a normal 2009P PL cent to show the difference.
Is this normal to be missing on the proof cents?
2009 S Proof Cent- Pic 1

2009 S Proof Cent- Pic2

2009 P - Normal Circulated Cent
