1972-S Proof LMC DDO?

The doubling that makes the coin in the link special is the doubled bar of the 2 in the date. That being said, your coin is a doubled die. What you are seeing is the result of the doubled master die. This doubling is seen on roughly half of all 1972 cents, from all 3 mints (P, D, S). Look at the very last listing here: http://doubleddie.com/384301.html


Very bottom of the page: 1972 1¢ WMDO-001 Doubled Master Die

Don't forget how high magnification also makes things seen that never were meant to be seen! .

I think it does. I agree with Mark1959! Too much magnification and everything can start to look doubled. Remember, when TPG's grade coins, including doubled dies, they typically use a 5x loupe. Not 100x or 250x. Just 5x.
So in my opinion, what Mark1959 said is in context to almost any coin that you are looking at.

Do they make 100x & 250x loupes? Really?

I use a 10x jewelers loupe that I've had for years. So you're telling me it's 5x too much?

Anyways, you're missing my point...a working die that was created from a re-engraved Master die is not the same thing as a working die that was created by a hubbed doubled Master Die, right?

To my understanding, each Die type would produce two completely different types of varieties. Yet every time someone posts a possible 1972 DDO on here they are told what they are seeing is the result of a hub doubled Master Die which is VERY confusing when you attempt to apply what you've learned, to what you are seeing on the coin.

Which in the case of my coin, would NOT be considered a doubled die at all, but a proof coin that was struck from a working proof die that was hubbed from a unique, yet very poorly re-engraved Master Die.

The point I'm trying to make Coop is that the 1972 Master Die wasn't hub doubled. The characteristics seen on one of the two Master Die's used to hub 50% of all working dies was actually the result of a poor re-engraving of the Master Die itself by one of the Mint engravers.

If it was such a significant case of Master Die doubling, why did it not even garner a mention under the Master Die doubling section of ERROR-REF.COM? I would think that the 1972 LMC would be considered more relevant than the Master Die doubling on 1918 LWC or even the 1960 SD LMC, if it was indeed a genuine case of Master Die doubling.


http://www.error-ref.com/master-die-doubling/

The above quote you posts\ed says it was his "contention that is was from a re-engraved master die." So what is the source of that quote from? Experts from different sites all the time disagree with each other.
Added:
Never mind, I just re-read the previous post on the CONCEA site. It was not that I was doubting as much as I was wanting to see a source. I missed the images from the Variety Vista site from before or were added after I posted. I felt it looked like that to me, just needed who brought this idea up. Thanks for this information update to me.

Of course that is Machine Doubling, that fact is obvious. You would think that they would have found a better example to use as the reference coin.

However, it is a fine example showing that both forms of doubling (machine & hub doubling) can exist on the same coin:))

Through my research into this enigma known as the 1972 Master Die doubled LMC, I finally realized that my coin is NOT a doubled die at all, after I discovered that what I was seeing was in fact the result of a re-engraved Master Die it all began to make perfect sense.

Here.....maybe these visual aids will help.