1963-D. Roosevelt Dime(S)

You could have one with the same obverse dies and with different reverses. But they are probably different die states on the reverse, but the same reverse dies. Looks like the last image is showing Machine Doubling on the mintmark area. But the die scratches are fresh/fading on there other die. Note images 7 & 8 are showing the same die scratches. (Note the die scratches are stronger and fading) So I feel both coins are the same obverse and reverses, with different die die states.

Looks like those two faded differently. But both coins are from the same die pair. (The one with the weaker lines was struck later than the one with fresher lines.

Yes. Note the incuse marks into the mintmark? That tells us it was Machine Doubling.