Lot 149 Canada #U104 8c Blue Fisher Issue 1975 Postal Envelope, A #8 Envelope With Taggant Spill Across Stamp, Unlisted, Est. Value $10

A number 8 8c envelope from the Fisher Issue, that shows a taggant spill accross the upper right corner of the stamp image. Unlisted as far as I know. Our estimate of the value is $10.