However, before I get into these, I want to add an update to my post about the plate blocks, due to something that I just discovered while doing some scanning of the plate blocks. Take a look at these two lower right plate blocks of the 3c carmine rose:
None of the booklets issued for this issue contained any pages with postage rate information, and all known booklets were produced using stamples that are 17mm wide along the front cover. Booklets with different sized staples may have been reassembled after having been opened.
The Chewing Gum Booklets
Unfortunately I do not have any examples of panes that I could scan, but the 1c, 4c and 3c were issued in booklets like the one shown above. There was one pane each of three stamps. Each pane had a perforated tab on the left side through which the booklet staple passed and was imperforate on the right edge of the right stamp. So the two left hand stamps on each pane resembled coil stamps perforated 12 instead of 9.5 because of the fact that they each had 2 parallel imperforate horizontal edges, while the right hand stamp is imperforate on 3 sides.
The booklets were issued in both English and bilingual versions and much to the delight of specialists there were a series of different dies that were used to produce the front and back covers for these booklets. Getting into the detail of what distinguishes all these types is beyond the scope of this post and would involve plagiarizing a book already written by Peter Harris on this subject called Canadian Stamp Booklets Dotted Cover Dies 1935-1965. What I can say about these is that there were 15 different dies employed for both the front and back covers, and they way they are distinguished is by the arrangement of the dots just above the upper left of the coat of arms panel on the front cover and to the upper left of the text panel on the back cover. Harris has reported a total of 16 different English booklet cover combinations and 18 different bilingual ones, some of which he notes are very scarce.
The back covers are shown below:
The English back covers are all distinguished by looking at the arrangements of the dots inside the top left hand curve of the text panel. On the top scan we see that there is an arc of 4 dots, whereas on the next type there is an arc of three dots. On another type there is a straight line of four dots that is intersected by a 45 degree line of 4 dots almost resembling an open beak. The fourth type is an almost right angle consisting of three dots up and two across that encloses three more dots arranged in a triangular pattern. I will update this with additional scans as the booklets become available.
The bilingual back covers are differentiated by looking at the dots just outside the lower left curve of the text panel. On the above type there are two diagonal rows of dots. On the second type, there are two overlapping arcs one being 3 dots and the other being 5 dots.
Together, Harris notes that there are 12 possible cover combinations for this booklet.
Another thing that hasn't been considered, but is apparent from the scans is that the colour purple comes in different shades and as far as I know this has not been studied at all. I have also seen with these types of booklets, plate flaws on the covers (i.e. blobs and void areas) and minor double prints of the frames, text and dots.
The 25c Booklet Containing 1 Pane of 6 4c Violet
The last booklet to be issued for this series contained a single pane of 6 4c violet stamps as shown below:
The front covers are shown below:
Here the distinguishing characteristic is the shape of the dash between the words "Postes-Postage". On the above type, the dash is rounded at the right end. On the second type, the dash is rectangular and is not rounded.
The back covers appear exactly the same as the back covers on the purple booklets above with the same types, except that on these booklets, they are orange. Harris notes that there are 8 different cover combinations on this booklet.
As you can see there is a great deal of scope with the booklets. In addition to the cover combinations, which provide a total of 54 different identifiable booklets, there are potential plate, shade and printing varieties possible with both front and back covers, as well as possible paper and shade varieties on the panes contained inside. I have not examined enough booklet panes to know for certain which shade and paper varieties exist. All the panes that I have seen have strongly ribbed horizontal wove paper and just one shade. However, I am confident that if one were to study a large quantity of panes, that other varieties will emerge.
Tomorrow, I will deal with the Official stamps from this issue.