Curious.......what makes you think this coin is a 'doubled die'? I ain't seein' it and in order to strengthen your position, you need to post clearer images.
The 5 is not doubled. The line above the 5 is not raised, rather it is cut into the coin which is known as PMD. The coin took a hit and as such is considered damaged. Looks like a bag mark.
This year all the DDO's revolve around a doubled eyelid. Your MM placement doesn't fit any of them. The pixilation in your photos make it hard for anyone to get the details. Try: Get as close as you can to the coin with out using the magnification. Take the photos when the image is as clear as possible. The only post processing that should be done is cropping and rotation. Magnifying only adds pixilation, let the software on CT do that for you. Hope this helps try stabilizing your camera if the image is blurred. Good luck!
It's a bag mark. Plain and simple. We all know that but the OP. You can't make something out of nothing but they keep trying.
Pay attention people the extra photos are for this question "Is the mint mark an RPM" get over the DDO
Your making an attempt at learning, It's easy for us to lump folks together hang in there. Not seeing an RPM.