Your explanation does make sense with many error coins. As long as an error is known and published, it will be recognized within seconds by most collectors.
There are many other known error coins not easily recognized as error coins unless one knows what to look for, or someone else told them and pointed out the error.
Usually, something like that is not readily seen if a person is not aware of it and has never seen it before!
Note: the 25 and 32 far/near had to be discovered by someone? right? seen within 2 seconds? Not then, but now "everyone " knows it.
The eye appeal and wow factor play only a role when an error or variety is known and is rather prominent so it can not be missed, and everyone is looking for it.
Presently this error nickel has had no exposure for this error and is only known for the rather odd MDD Date of which many are available.
However, nobody most likely has ever noticed the rim on it because the mind was set on the DD date. I only saw it just by chance playing with the lights when trying to take a closeup of the DD date.
The crack I saw in the rim caused me to follow up on it. I just wanted to see where it ended.
The cracks turned out to be ONLY on every corner right through from rev to obv side.
These cracks are clearly visible without magnification, obverse, and reverse! However, they are small. but they are there.
All you need is a sharp eye, an open mind to discover, and "wanting to look".
OR, when you know about it, you see it instantly.
Everyone who looked at my posted images probably just looked at it as another boring 1962 nickel even though the cracks can very easily be seen in the picture pair.
Maybe you are right suggesting a flawed planchet. But why are only all corners affected with cracks?
I have at least 2 of them out of a full roll of 1962s. I have still others from the same roll that do not have cracks.
So, there are more than one in the wild. For sure and who knows how many more? I gave some from the roll away over the last few years when I did not know about the cracks. So, who knows.?
I have mentioned often that I am not a mechanical person and that I only look at the end product.
Comparing this coin in hand with other 1962 nickels, I noticed other properties slightly different. Might just all be coincident.
Perhaps you guys might check your coins and just maybe you will also notice the issues.