Probably only an hair on the paper when printed. See this post for Hairlines. https://stamporama.com/discboard/disc_ma ...
A "hair" on the plate??? Are you kidding me?....I thought I had discovered the Holy Grail.
Look at the "A" in postage. There is no mention of hairlines in Unitrade for this denomination.
re: Is this an example of "hairline" on this Canada George stamp/
