Page Notes
During plate layout, compass arcs were etched on the printing plate to help ensure that the rows of stamps would be aligned.
Occasionaly the "Arc" varieties can be found on the finished product.
Unknown
Flaw Zone 4
4LR80
Flaw Zone 1
Flaw Zone 6
Flaw Zone 8
Re-entry Zone 6
Re-entry Zone 8
Flaw Zone 12
Flaw Zone 9