That's exactly what I was thinking. We caught a mistake. He admits there is a split in the serif but I was surprised by his follow up: "Such minor splits are considered to be within mint tolerances and thus not considered for inclusion in the designation or listings."
So I guess that means if you find a double die but it's only minor, it's not a double die. 😳
I play a lot of tennis and we have a saying "if the ball hits the line and it's 99.9% out, it's actually 100% in....hope you get my point.
AMB