Shelf doubling or something more?

I just picked up this 1942 D Merc and it has some interesting doubling on the obverse. I think it is probably just shelf doubling, but I wanted to run it by you guys and get a consensus.

 

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From what I've picked up 'round these parts, the coin looks MD........

 

THIS is how to photograph the coins to get an answer,well done!....

 

BQ, that's a beautiful coin. In a doubled die, you're going to see a "top" impression that's intact. In strike doubling, you're going to see a "top" impression that's cut off. Pick a letter. Take the E in WE. Do you see how the left side of the E is cut off? Take the R in TRUST. Do you see how the left side of the R is cut off? When you're seeing these "top" letters cut off like that, think strike doubling. That's not always the case, as sometimes the letters and numbers are deformed on the die, but it is in the vast majority. Get out a good 1942-D dime and compare the Es and Rs at this level of magnification. In fact, photograph them, and set the Es side-by-side, and the Rs. There, you'll see it.

 

LIBERTY whacked ......

 

MD . Excellent pics BQ .

 

Yes, indeed they are well done.

 

Machine Doubling/Mechanical Doubling/Shelf Doubling/Step Doubling/Strike Doubling etc etc etc - Very common on Mercury Dimes, especially from the 1940s. That is what you have here as others have indicated.

 

I've always loved this sketch by Chuck Daughtrey

 

That's a good one. I had not seen that before.

 

Looks MD but a pretty sizable spread. I'd hang on to it just as an extreme form of the type.

 

thanks guys, about what I thought, but confirmation never hurts. I am holding onto it as it is an NGC MS66FB that I am going to put into my registry set.