Two faint strokes cross the oval frame line East of the oblique line in "N" of "Canada"; main position dot is centre and full.
Kershaw's notes
There is a double oblique tooling inside the TL oval frame adjacent to "NA"
Morel's notes
Position dot in left oval (3 o'clock) and 2 parallel lines just right of N of Canada, and in the narrow white oval above second A of Canada. (see orange box)
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.