Looks like there's only one listed DDR at coppercoins and unless you see the notching in the R of AMERICA then you are looking at a normal cent. Some of these early Zincolns have an odd texture. Deteriorating coin I suppose.
the ONE looks interesting. But I would like to see better pictures. one which are facing directly down and not at an angle. And much more in focus. But you should always search on the main error websites for what you think you have. Go to a brighter location to take pictures. And keep practicing taking pictures straight down versus an angle. and you'll always want to show both side completely.
For clawcoins. That's why I actually recognized this coin because can totally see the one. Here's a couple of the one cent. Coins not deteriorating at all. Mother in law had kept Penny's in a glass piggy bank you have to break to get open. since 70's and probably got pretty quick and stuck it in there.Its very nice and I actually have super mint ones with no blemishes.
I’m on my phone without my reading glasses But I was looking for this diagram for you to look at on this thread https://www.cointalk.com/threads/1969-ddo-on-date.320805/#post-3153864
"Notching" vs "Shelf Like" I think are the terms that need further definition. You may want to research that. If you look at the bottom of the O you can see the slightly reduced size of the bottom curve of the O, while it has a slightly wider total width than it should be. It's like someone put a nice "curved height" O on top of a flat O. The "extended" part of the bottom of the O looks flat and shelf like, no notches. That is indicative of machine/deterioration doubling. read this==> http://www.lincolncentsonline.com/mechanicalDoubling.html ==> https://www.ngccoin.com/news/article/5688/Double-Dies-vs-Machine-Doubling/ I try to think of "notching" as a separate part of the letter altogether that has the same heights and curvature of the height of the letter as the original letter but *not* sitting underneath it. It may not be true DD but it is indicative of it, and separates MD/DDD from the identifiers of true DD. As shown by the last 2 examples here ==> https://www.errorvariety.com/OFD/DDD.html And conversely I try to think of MD/DDD as a "shelf" of the letter which may not be smooth formed around the edges with a properly formed letter on top of it. I think that is a simplified concept but maybe easier to understand. Here's the bottom reverse of a 1985 D penny without any anything for comparison. It's a long learning journey. Best to buy a real Doubled Die coin so one has it in hand for comparison.
