1960 P Uncirculated Jefferson Nickel - Double Die Times 4, 5,6,7?

to CCF.
Looks like a lot is going on with this Jefferson, along with a worn out die. I'm not a nickel expert, more in tune with Lincolns, but this is what I see on your coin in my opinion. The letters look to have a combination of Machine Doubling and also what possibly looks like master die doubling on the reverse motto. Definitely shelf like doubling from what I can see on the devices around the rim. The nose I believe is definitely MD where it looks like the working die took a few bounces off of Jefferson's profile creating the added 'noses'. Throw in some Die Deterioration Doubling on this coin (maybe) and it has all the characteristics of, well, a normal nickel. Just my opinion here.

A doubled die has the spread in the centers of the devices. All the image you are posting are affected on the outside of the devices. Both Machine Doubling and extreme die wear. On the DDR you see the spread as I mentioned on the centers of the devices. Here is an example from that year:


















Spread in the centers of the devices, not on the outside edges of devices.

Yes. You can have Machine Doubling on a doubled die:

Most of the big DDO's have MD on the DDO. But to a collector, without it is preferred. (Note the yellow arrows for the MD)

It looks like flow lines of the metal. you can also see it on the 'U' and 'N' of United and on the bottom of the memorial. They all seem to angle (or flow) towards the edge