Canada #156 12c Deep Slate Gray & Deep Slate Quebec Bridge, 1928-1929 Scroll Issue, 2 Fine Used Singles

2 fine used singles of the 12c deep slate gray & deep slate Quebec Bridge from the 1928-1929 Scroll Issue.

Unitrade values these at $12. The stamps offered here grade 66 & 70 as follows:

Centering/Margins: 30/60

Paper Freshness: 5/5

Colour: 5/5

Impression: 5/5

Absence of Visible Paper Flaws: 5/5

Perforations: 10/10

Cancellation: 6/10, 10/10

There are many points of interest for specialists on this issue which are not alluded to in Unitrade, chief among them being the precancels and perfins that can be collected on the stamps, many of which are quite scarce in fine or better condition. Turning to the stamps themselves, all of the values exist with variations in the shades, some of which are more outstanding than others. I have found a few values on unlisted thin papers, just like the earlier Confederation and Historical issues, and this week I have discovered hairlines on a used example of the 8c blue, so I know that plate cracks exist. The gums show the same kinds of variations seen on the Confederation and Historical issues also.