Egypt Printing Freak?

I found this while I was going through my stock page for stamps to mount.  The two stamps are Scott no. 96, King Fuad.  The stamp on the left is a normal copy and the stamp on the right has some sort of printing blemish at the upper right.  Note that the blemish is under the ink of the cancellation (which is also interesting as the stamp was cancelled in the city of Luxor which at that time was spelled "Luqsor" and possibly at the Luqsor Winter Palace Hotel).