Canada Post released their final set of 4 stamps in the 3 year series of the Signs of the Zodiac today (Feb 20/13).
The customary self-adhesive panes of 10 (one for each design) and water-activated gum souvenir sheet of 4 were released.
In addition, a water-activated gum pane of 12, containing all 12 stamps in the series, was issued today (this is a scan of the actual stamps):

Why this topic?
Well, the perforation gauge on this pane of 12 is
different from the souvenir sheets of 4!
Souvenir sheets: perf 12.5
Pane of 12: perf 12.5 x 13.2
Yippee! 12 more varieties to collect.
In used condition, what will be scarcer; singles from the three souvenir sheets or singles from this new pane of 12?