What Kind Of Doubling Is This? 2000-P SC Qtr

I don't think it is the HUB doubling but I still get mixed up on MD and Die Deterioration Doubling.

thanks for looking.

This is a Doubled Die.


When it's MD Strike Doubling the die hits the coin more than once, flattening part of the devices that were just imparted on the coin from the first strike. This leaves the first strike devices reduced in size and the "doubled" portion is flat and shelf-like.
When it's MD Die Deterioration, the edges of the recessed devices on the die are worn and leave a sloppier "doubling".

Yep 1983. Your welcome.

MD by many accounts originally stood for Machine Doubling, as it is actually not doubling, there is movement in Numismadialand to change it to Machine Damage,a more appropriate nomenclature,(with the same initials). If I'm not mistaken, this movement was started by our very own world renown, resident expert, Mr. Richard S. Cooper (Coop).
They do often look similar, don't be distracted by my picture (believe me, I know it's hard to look away), but read what I said in my posts on this thread. Three things I didn't say was with Die Deterioration, the surrounding fields are often distorted because the metal on the planchet "flowed" due to displacement by wear on the die. Another thing to look for is direction - Die Deterioration usually flows toward the rim. Double Strikes usually is all in the same direction regardless of the rim. That being said, forms of MD are essentially worthless, other than helping you on your way to recognizing Doubled Dies.
By the way, another movement is under way to change the old term PMD (Post Mint Damage) to PSD (Post Strike Damage) the reason being many coins are damaged before leaving the Mint. I believe this movement is attributed to Coop as well.
Sorry to ramble on so much, I guess I had a few minutes to burn.

A good goal to have CC. I don't always get them right myself. I do usually know if it is MD, because MD can be Double Strike or Die Deterioration. I guess I have pretty much settled for distinguishing Doubled Dies from MD.
That's very cool you made the 83 your desktop. Glad you like it. It's easy to recognize what it is, as are most varieties and errors. You can be uncertain with many coins, but when you look at the real-deal, the uncertainty evaporates.