1971 D DDO, Opinions Please.

Sorry. It is just Machine Doubling. The difference? Note the size width/height of the devices on your coin? They are normal sized. On the DDO the devices are enlarged even larger.
http://www.varietyvista.com/01b%20L...1DDDO001.htm
Note the devices on TRUST on the example from Variety Vista. (Only one DDO listed from that year/mint.
Same die number on coppercoins:
https://www.coppercoins.com/lincoln...ie_state=mds
Wexler's site also only has one listing, but it maybe a different die than the other two?
http://www.doubleddie.com/661955.html
But study these to see what you should be seeing on a doubled die. The spread on the centers of the devices. You are looking at the outside of the devices. That is where you will find Machine Doubling and on the devices that face the rim, they will show die wear in that direction. Only a doubled die can strike a doubled die coin. Machine Doubling is not the same thing. it is common and can vary from strike to strike. (Or even be normal) A striking issue, not a doubled die issue.

I am aware of what Machine Doubling is, there is no shelf like doubling visible. I matched this coin to the one on Wexlers DDO List, for instance look at the thickness of the N in of IN. I don't understand why they matchup , but everything is Machine Doubling. It is very frustrating when it matches the DDO List.