[learning Doubles] This 1958-D Is Confusing Me

Hi all,

I'm attempting to learn my doubles, but its taken quite a bit to do so. I thought that I had a pretty good knowledge of them, and then I received this one which has thrown me off guard completely. It appears to have shelf/machine/mechanical/etc doubling on some letters, but there are a few which just completely confuse me. Any help would be greatly appreciated.

What I am going to attempt to do is show each photo, and post my thoughts on each and why I came to which conclusion. I would greatly appreciate feedback on what I have wrong about it and how to prevent the mistaken identity in the future please :). Thank You!

L1:


In this photo, the "U" in United States looks to have a valley between the it. The N does as well on both sides of it. The rest of it appears normal.

L2:

This a view further down, the "U" and the "N" are the only letters that appear to have some sort of doubling from this view.

L3:


This is another view, and the "U" appears like a shelf here. The "N" still has what appears to be a valley. The "E" has a notable feature at the bottom of it, but it could be a scratch. The "M" at the top on the second smaller part of it at the top appears to have a spacing in it.

L4:


In this one, the bottom of the E and the side of the T definitely appear to be like a shelf.

L5:




And this is the rest of the lettering. It doesn't seem to be off except the S, but the S appears to have a lowered doubling from what I can see.

Any advice, tips, or tricks are very welcome :).