Here is an example of poor print quality with respect to Canada booklets.
Here is the left border of the 5 cent stamps in this booklet.
Below is the second 5 cent stamp left border...Which is straight.
Now here are a few left stamp left borders of a few of my BK80 booklets...Only happens on far left stamp only.
Now here is a possible variety/oddity on the 782a booklet.
All mine but ONE has the downward part of the stem...
One is missing...hope collectors out there can find a couple more...Thanks