Measurements of the proofs at the Canada Postal Archives were found to be 34 mm x 22.5 mm
The stamp on the left has a width of 33 mm and the stamp on the right has a width of 34 mm
For other Canada stamps, a difference in width 0.5-1.0 mm has made a difference between wet and dry.
The stamp on the right also has a much clearer, cleaner and crisper impression than the one on the left.
