The reel-fed printings with type III:
the reel-fed printing have been comb perforated - in-line i.e. with a perforation head mounted on the rotary press - from top to bottom, occasionally displaying a extra thick or thin tooth both in the bottom left corner as in the bottom right corner!
The height of the stamp is always 30.0mm - unless the bottom teeth are extra thick or thin!! No need to use a perforation gauge....
On the look-out for MI, MM and MRC!
to be continued ...