Canada #1166 39c Canadian Flag 1988-1991 Wildlife and Architecture Issue, A VFNH LL Field Stock Block on Thinner DF/LF-fl Peterborough Paper, Perf. 13.6 x 13.1
A VFNH lower left field stock block of the 39c Canadian Flag stamp from the 1988-1991 Wildlife and Architecture Issue, printed on a thinner version of the Peterborough paper that is DF/LF-fl, rather than the usual stiff DF/LF Peterborough paper, and perf. 13.6 x 13.1.
On this issue paper fluorescence has been completely ignored because the perception is that all the stamps are on dull paper. However, this is a bit of an oversimplification, as the pictures of some of the low value stamps will show. While it is true that the coated Slater, Harrison, Rolland and Peterborough papers are generally dull on the face, or non-fluorescent on the face, stamps on Coated Papers Paper are truly "dead" on the face most of the time and are much darker under UV than the stamps on any other paper. On the back, the papers vary from NF which is quite greyish to DF cream to a very light low fluorescence on some of the Harrison papers.
Unitrade does not list field stock blocks, but lists 4 regular singles at $4. There are two very light gum blemishes on the bottom 2 stamps, but still an intriguing paper variety. The block offered here grades 75 as follows:
Paper freshness: 5/5
Absence of visible paper flaws: 5/5