Canada #529 10c Multicolored Christ Child, 1970 Christmas Issue, a VFNH Upper Right Inscription Block Showing Leftward Shift of Pink Overlay Colour, MF Ribbed Paper
A well centered and very fine NH (2 small gum blemishes affecting 2 stamps) upper right inscription block of the 10c Christ Child stamp from the 1970 Christmas Issue, showing a 0.5 mm leftward shift of the pink overlay background colour that is responsible for deepening the bright blue background colour to violet blue, so that a small vertical sliver of pink is visible at the left of each stamp. Printed on medium fluorescent vertical ribbed paper.
Although not listed in Unitrade, this issue can be found on both smooth and vertical ribbed papers. The ribbing, when present can always be seen from the gummed side, but also the front as well, in most cases.
Unitrade does not list these types of shifts, but my estimate of the value is $10.
The block offered here grades 80 as follows:
Paper freshness: 5/5
Absence of visible paper flaws: 5/5