2 1964-D Jefferson Nickel Possible RPMs

I see die wear issue, Machine Doubling issues. But no RPMs. You might check out the RPMs for that year of nickels to see what to look for on these:
http://varietyvista.com/05%20JN%20R...%201964D.htm
The first thing you will know about them, is this; All the mintmarks are enlarged and not reduced in size. When you look at the edges of devices and you see that area flat, shelf like, then you are looking at Machine Doubling. Note on the RPMs, you can see the contour on all sides of the devices. MD removes the contour. Leaves it, flat, shelf like. So knowing what you are looking for is the best way to search coins.