1969 D Penny Off Center Strike And Floating Roof Error

I may be mistaken, but I think you and I agree totally. I think the problem is in subtle translation differences?

I was trying to compare an actual collectable error physically produced by the mint's die making process (doubled die) or machinery (misaligned die) against a "die event" such as a die polishing.

BTW - I learned the term "die event" from a friend named Paul on another forum who is a Wisconsin State Representative and Master Die Variety Examiner for CONECA.

Although the slabbing companies do actually take some die events (such as the No FG 1972-D half dollar) and label them as actual varieties. Some of their reasoning could be because one of their former president's Ron Guth, was the one who "discovered" the 1972-D No FG half, and labeling it as a an actual variety brings in profits.

So there is a bit of confusion in the hobby as to technical definitions.