IMHO I believe it to MD from my understanding most of the time when the date and the MM are doubled normally it's an indication of machine doubling. But wait for some other opinions indefinitely. Dave
I have the same exact penny I refuse to agree that it's mechanical dubling it's so doubled it's not even funny but I'm terrible at that so I don't know I'm keeping mine
I think it’s die deterioration damage, which is quite common on early Zincolns. Based on my observations, Die deterioration tends to be more “ghost-like and shadowy” while MD is more shelf like. However, since neither add any value, unless you have pedantic, OCD tendencies (like me ) it probably isn’t worth debating. @Willysilver Did you check any of the variety/error websites to see if they listed your coin as a DDO (check some of your previous threads for links)? These sites are kept up to date and would most certainly list something as significant as what you describe. Go ahead and keep it, especially if you found it in change. You only have $0.01 invested in it. But just remember, it’s not going to fund your retirement
It is mechanical ( strike) doubling. This can be seen by the narrowing of a portion of the "legs" or "arms" ( depending on the direction of the die movement) due to the second action flattening part of the normal strike. A true "Doubled Die" the portion of the leg or arm doubled would be Wider than the areas not doubled, as the last portion would over lay the first and give a wider number or device. Look in reference material and notice that the doubled effect produces a wider structure until the doubling effect is so large, the letters or numbers are fully separated. ( Big bucks). The example shown is MD and worth the face value.