Canada Post states perforation 11, not perforation 11.0x11.0; there is a good likelihood that the perforation given by
Canada Post is rounded off. In other words, the entry in
Canada Post is not decimal perforations. For many years, Scott also rounded off to the nearest 1/2 perf. Scott didn't start giving decimal perforations until well past 1980 after the US began using in-line perforators and serpentine die-cuts. This used to cause me all sorts of problems using the Scott catalog for some British Commonwealth perforation varieties of the mid-1900's -- for example Scott would round off 10.75 to either 10 1/2 or 11. So stamp variety perf 10.75x11 might be listed in Scott as 11x11 or 10.5x11.
I would trust the 10.8x11.0 given in Unitrade. But unless there is another minor perforation variety to deal with, the perf 11 information is usually sufficient.
Posted 08/14/2014 4:17 pm
