Canada #587 (SG#694) 2c Green Laurier 1972-1978 Caricature Issue MF/LF Paper Type 2 & 5 Plate 1 Blocks VF-75 NH

Two very fine NH plate 1 lower left and lower right corner blocks of 4 of the 2c green Sir Wilfred Laurier stamp from the 1973-1977 Caricature Issue, printed on two different varieties of paper. Printed on vertical wove paper showing no ribbing on either the front, or the back. General OP-2 Ottawa tagging, 4 mm wide, of two different intensities as detailed below, and glowing a bright yellow under ultraviolet light. Comb perforated 12.0 x 12.5. Smooth, creamy PVA gum with a satin sheen. These were the first comb perforated stamps printed by the CBN, and there were different configurations of the perforating combs that can be distinguished by looking at the selvage. Both blocks offered here are the most common type in which the selvage is fully perforated through on both sides. The paper also gives different reactions under UV light as follows:

1. On the LR plate 1 block, the paper gives a low fluorescent bluish white reaction on the front, and a low fluorescent bluish white reaction on the back, with a low density concentration of low fluorescent fibres, and very few high fluorescent fibres being visible in the paper. The tagging is of light intensity, meaning that it is barely visible to the naked eye.
2. On the plate 1 LL block, the paper gives a low fluorescent bluish reaction on front, with a low density concentration of low fluorescent fibres. On the back, the paper gives a low fluorescent bluish white reaction with a low density concentration of low fluorescent fibres visible in the paper. The tagging is of moderate intensity, which means that it is clearly visible to the naked eye, but is not dark in appearance.

Unitrade does not differentiate between these two different types of perforation, and values two VF-75 NH blocks at $1.50. The blocks offered here grade 75 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: 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.