Well the wife and I were Coin Roll Hunting today and although we found no silver, we found some interesting pieces for sure. She has yet to find a 74D DDO, this is as close as she has got and I tried to tell her it was not one as the "R" is not right, however this does appear to be something. My guess is mint doubling... I however found something real odd on an 82P....not sure what to think of this and I just can not see Post Mint Damage.....strange..
And then this....not sure but it either was stuck in a blender or something happened at the mint. I have never seen anything like this.. Definitely and odd bird for sure..
The 1982 looks like a massive die clash -- I've never seen anything like it on a Kennedy. The last one looks like it was partially melted. Given the irregular shape, I can't see it as anything but PMD.
Me either, I almost tossed it back but wanted another opinion on it. Die clash huh? It is all over his neck, both sides! Well if you see it in hand that would be the first thought, however I can not see how or what could do this..
A die clash occurs when the dies came together without a planchet between them, each leaving their impression in the opposite die.
I will try and get some better pictures of it..... So the 74D is a machine double? What is the deal with the 76?
The '74D is a normal half. No one keeps records of the damage done to coins, so you will not get a better answer than the '76 is damaged. Accept the fact that it's damaged and that you'll never know how or why.
Here are some better pics of the 82....... Maybe this will help. If this is a die clash, which I guess I do not understand enough, is it a keeper (will anyway) and is this something that is worth enough to be slabbed? I assume not...
As for the 76, it must be PMD but something is nagging me about it. I have seen lots and lots of halves and nothing quite like this. I want to think it appears like it was waffled or something. It is just so odd I will keep it..
Here's a good site for clashes.http://www.maddieclashes.com/ And the overlays.http://www.maddieclashes.com/fifty-cent-overlays/ A keeper but not worth slabbing.
As to the '76, if the coin has reeding it was struck in the collar. If it was struck in the collar is has to be round. Being out of round means PMD.
Picture two dies coming together to strike a planchet. Each die is a "negative relief" of the coin design -- the high points on the coin correspond to low (deep) points on the die. Now, picture these two dies coming together without a planchet between them. They hit each other, with their high points colliding. What are the high points on the dies? The areas corresponding to the lowest points on the coin's design -- in other words, the fields. But since the obverse and reverse designs of the coin aren't the same, there are many places where the design from one side overlays the fields of the other. Since these design areas are recessed -- remember, they're the opposite of the coin design -- you've got areas where there's no contact between the dies. The impact between the obverse and reverse dies forces metal into those voids. So, if a die sustains clash damage, it will go on to produce coins that carry: A faint image of the opposite die (in your example, the Kennedy reverse rays)... ...appearing only in the fields of the coin (there's no contact in the design areas, thus no damage)... ...in an incuse pattern (because metal in the field areas of the die has been slightly "pushed up", and it will "push down" the metal of the planchet)... ...and mirror-reversed (because it's "reflected" onto the opposite die). At least, that's the way I understand it, and it does seem to match your images perfectly.
