Better closeups would help as of now I'm not seeing it most likely MD. http://varietyvista.com/12 Kennedy Halves/DDOs 1971.htm/ http://varietyvista.com/12 Kennedy Halves/DDR Detail Pages/1971PDDR001.htm
The area you are referring to is MD-machine doubling flat and shelf like not a doubled die.Its actually not bad looking for a first year clad half I would suggest keeping it.
But still a cool find for Ms. Beck. Put it a 2x2. Save for comparison, show and tell, or until a better clad Kennedy half comes along. Or save up enough for each, be a cool grandbeck, and share 'em with the grandkids. They will think you gave them a million dollars.
When an ancient coin shows doubling the thought that leaps to mind is "double strike." The die bounced a bit on the strike or maybe it was actually struck twice with the die not perfectly aligned the second time. However, with US coins showing doubling all I ever hear about is "double die." So dies are sometimes struck by the hub twice, which can make doubling, but coins are never subject to the same error? Why can't US coins be double struck? Why can US coin dies be double struck when US coins can't?
They can ,and there are lots of double struck US coins on E-bay. I think rotational double strike coins are a quite rare type in that category of errors.
So I got to wondering, what likely happened on this coin to make it like it is? Just trying to learn.