Bunch Of Random Photos. Looking For More Advice As I Learn.

Hello everyone,

You'll have to bear with me on this one. Just showing off some coins I came across recently and wanted to see if some were RPM, doubling or double dies. I started looking at the center of the lettering and sometimes I come across coins like shown below.

Not sure if this would count as doubling. The 5 is a little thicker and there is a line down the center of the 9.




This one I am curious. I see B's in Liberty from time to time like this one. Where it looks to be like a window in the center of a B. There is some slight doubling? This correct?


D over D?



This one I am curious about too. Sometimes I see E's, C's with the tips that look like this < how it splits. Not sure what that is, or if it indicates doubling.



Not sure if this is doubling or what. But the 9 looks to wrap around and under. Hope the photos show it good on here.



This next one. .maybe a double ear? the thing is though, it's on a 1985.



1990 you'd have to zoom into the 9's on this to see it better. could be machining. But the letters above show this.





This is on a 1940's nickle. Looks to be a slanted D over D. I found 3 of these. One with a D under an S also. But not sure if this has something a little extra between the O and N. It's raised. Not sure if there is anything to it.




Came across two really nice 1969's. Don't think these are anything. But the tips of the 6 and 9 seem to be splitting.




S over D



doubling or 2 over 2? there is a little peak of the 2 at the tip and then as it curves towards the bottom.



Might have to zoom in on this one. Really nice 72. With the 9 and 2. There is a line in the center. This is what I should be looking for, right?





I need to find this one again to take more pictures.




And the last one. This doubling or machining? I thought machining, but then some overlap. The rest of the coin I didn't see anything.

Thanks for sticking with me!