Lot 250 Canada #1159-1161 6c Red Fox – 25c Beaver, 1988-1992 Mammal and Architecture Issue, 5 Upper Left Inscription Blocks on Different Slater Papers

A group of 5 upper left inscriptions blocks of the 6c-25c low value definitives, all printed on various Slater papers, each giving slightly different reactions under UV light, or showing slightly different shades, or sharp versus diffuse tagging, including:
• 6c DF greyish/DF greyish cream.
• 6c DF greyish/DF greyish white.
• 10c DF greyish/DF greyish.
• 25c DF greyish/DF greyish with sharp tagging and diffuse tagging that bleeds through the paper.
Unitrade does not list these subtle paper differences, nor the difference in tagging. The Unitrade for the basic blocks is $8.75. The blocks offered here all grade between 75 and 84.

The Mammal and Architecture definitive issue is the subject of this week's blog post. You are encouraged to go here to find more information about the paper, shade, gum and fluorescence varieties that are described here, that are not in Unitrade. There you will find all of the information that you need in one place. That post will be published by the end of the day on Friday, December 16, 2022.