Main position dot in the center is very small partly on East.Ed. Senator Calder seems to have identify a possible flaw. Although he illustrated it he did not define it.
Kershaw's notes
The oval dot is very small and merges right with the blue surround. No other criteria
Morel's notes
The oval dot is merged partly with the dark blue oval.
Stamps from printing orders 1 to 5A were perf. 11.75, stamps from printing orders 5B to 7 were perf. 12 x 11.75 and those from printing orders 8 to 12 were perf. 12.