Is this doubling on this quarter or grease etc. Issue?

Still new and I still can't really discern the major difference unless overtly obvious doubling with obvious two or more full sets. However this seems like doubling to me. May I please get your thoughts on it?

 

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Nav doubling

 

No actual value doubling? Yes?

 

But it is minute incremental doubling what if I said it was on a 1978 d quarter or a 1969 d quarter would that change the thought?

 

It means no ADDED value. What is the year and MM?

 

It appears to be DDD ( die deterioration doubling) no extra cash value. Jmo

 

MD--

 

NAV or no added value doubling. Looks like MD to me.

nope

 

Strike doubling

 

Yes, that coin has doubling, but it is considered worthless doubling. Flat, shelf-like doubling is NAV, no added value to the coin, IMHO.

 

The effect that you see there is the result of a tiny wobble during the stroke that coined your coin. The slight movement created a tiny swipe that moved material, distorting and displacing the material. When that happens with a new die in the machine (a press), the step (shelflike appearance) is rather obvious. When it happens with an older die, with wash and damage, the step is less obvious as it becomes a compound event (wobble and the late die stage of the die).

Doubled dies are events with the making of the die that is used to make your coin. Two (or more) impressions offset just a bit. With a perfect strike...with no wobble, the coin that is coined will have the doubling. If you look at my attached picture, you will see a coin that was pressed using a doubled die AND you will see that the machine wobbled leaving the no added value 'doubling', (which isn't doubling) damaged impression (due to the press/tool used to coin my coin).

 

One other point that is important . 1995 is when most die prior were double squeeze die production years, so real doubled dies usually had 2 images that would be at the same plus/minus height ( depending) at similar parts of the coin.

Here is an easy one to see, maybe the most easy one

notice where the images overlap, both parts are close to the same height they merge together. No -brainer as my son says. As time passes the mint goes to computer automation of the dies and the die for common coinage only gets one single squeeze and variety collectors and specialists decided that even if it was only one squeeze, if it vibrate or moves during the single squeeze and the doubling was a doubled die still. I collect no DD after 1995, and I usually do not even respond to them as I believe they are basically mechanical doubling also. Jim

 

I am probably wrong, but trying to tell the difference between MD (Machine Doubling) and DDD (Die Deterioration Doubling) is hard to see. MD results from a die moving during the striking operation leaving a flat, shelf-like appendage. The resulting character is reduced in size. In DDD, the die has been overused and the edges are starting to wear and the characters are generally wider and the doubling can appear ghostly. Someone correct me if I said wrong.