Everything I read about MD / Shelving doubling leads me to believe that is what I have here. I just can't seem to wrap my head around why only a few places on the coin are doubled when this happens. A loose "collar" should double everything or radiate out if was on an axis, right? Can someone point me to an article or help explain? Thanks for your time. No doubling on obverse so I left those out. 1976 and a 1996 Kennedy Half Dollar.
It's strike doubling, yes. If memory serves me, the below link addresses the different types (including this) of "worthless doubling", but is a good read either way. http://doubleddie.com/144801.html
Thanks pal. That was a good read. I still don't understand why only a few letters are doubled but it is what is. I have a much better eye on what it at least looks like.
You are only thinking of mechanical doubling as being rotational only, but when the die is put into the "collet" to be secured, it may be secured at a very minuscule tilt also. Thus the face of the die is not exactly parallel to the other die. This will also give a direction from the affected point on the perimeter of the coin. So a slight rotation as well as a slight tilt can give different amounts of mechanical doubling damage in different places, But almost all are amazingly small. If I remembered where I read this, I would give reference. It was said in a different wordage, but this is my understanding . Jim
