The image 115 jpeg at the top shows a line through the G and one through AIRM. Just asking what that is called. Maybe nothing. I did look at some strike throughs, but not sure what this is.
I thought so too, but the Letters it goes through are intact and unaffected. So a "hit" wouldn't just affect the area between the letters and miss the letters right?
The letters are not raised but they are on a raised field and they are cut into the field. Chances are it was a defect on the planchet before striking.
I think that it was a die scratch or gouge. That would affect the field but not the design and there would be many more just like it in circulation, unless they removed and replaced/polished the die..