This Kennedy appears to have some doubling but not sure if its MD or SD or if I’m lucky and it to be DD like to get some opinions thanks in advance Dave
Classic case of machine doubling. It is caused by vibration, or bounce when the die strikes the coin. It is quite common and adds no collector value.
The easiest way to tell is to look at the O in Dollar. Machine doubling will shave metal off of the devices and they will be smaller at the doubled part. If it is a true doubled die, they would be larger or be normal size with doubling beside.
On Kennedy halves, it is very common to see this type of 'doubling' on the reverse where it says Half Dollar. Other areas less so. So I think for some reason this is pretty much confined to this area in most cases. Perhaps there is a setting at the mints how they put the dies in that forces this area to have some vibration when striking that doesn't generally affect the other areas as much. Sorry, because it is really confusing to people who have not seen much. I have gone thru quite a few halves in CRH over the years, and don't see true doubling on many at all. You need to generally look for double notching and know which parts tend to get the doubling.
Machine doubling, strike doubling, mechanical doubling and ejection doubling are terms that can be used meaning the same thing. Chris
I never noticed that until you mentioned it, but it's true. The entirety of the letter is the same when including what looks like the doubling. Thank you.
