Canada #926A (SG#1162) 36c Plum Queen Elizabeth II 1982-1987 Artifacts Issue Vertical Wove Harrison Paper NF/DF-fl Pale Yellow Tagging Cream Gum LR Corner Block VF-75 NH

A very fine mint NH blank lower right field stock block of the 36c bright plum Queen Elizabeth II bas-relief definitive stamp from the 1982-1987 Artifacts definitive issue, with the scarcer unlisted cream gum. Comb perf. 13 x 13.3. Vertical wove Harrison paper, with smooth chalk-surfacing. Smooth cream PVA gum with a satin sheen. Mottled light yellow GT-4 OP-2 tagging. Under ultraviolet light, the paper gives a non fluorescent grey violet reaction on the front, and a dull fluorescent greyish white reaction on the back, with no fluorescent fibres visible in the paper. Unitrade does not specify the paper fluorescence of this stamp, but all examples that I have seen are of this variety. All examples that I have seen are printed on Harrison paper, with the majority of examples being on vertical wove paper (stamp curls from side to side). The gum is almost always the bluish white type, but examples with a cream gum lacking the bluish tint, like that shown here are much scarcer. The comparison scan shows the clear difference, with the cream gum on the right, and the bluish white gum on the right. Unitrade values a VF-75 NH block of the most common type at $20. No plate blocks were produced for this stamp according to Unitrade. The block offered here grades VF-75 NH as follows: Margins/centering: 45/70 Paper freshness: 5/5 Colour: 5/5 Impression: 5/5 Absence of visible paper flaws: 5/5 Perforations: 10/10 Note any vertical or horizontal line shown in the scan is the edge of the acetate strip that the stamp was resting inside on the stockcard. Note: the above scan is a stock photo as are all my scans for material after 1952. The item(s) you will receive has (have) been carefully checked to adhere to the above grading standards, so while it (they) may not be exactly the same, it (they) will be of the same quality. Also, I do not provide back scans of NH stamps or blocks after 1952 unless they are required to illustrate some attribute of the paper or gum.