2012-D Jefferson Nickel - Push Doubling?

Did some research and the closest description I can find for this is Push Doubling. Am I correct?

Thanks for any opinions!

 

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Here's another one I found

 

I have a question ? What's the difference between Push doubling and Mechanical ( strike and machine) Doubling ??

 

Er, I'm not sure. error-ref breaks Machine Doubling down into subcategories... That's where I got my theory on this.
http://www.error-ref.com/machine-doubling/

 

Okay, I got it . Their all Machine Doubling just a sub-Category of .

 

I guess just nuance for the error savvy (or the googling newbies)

 

Yes. Makes me

 

Push doubling is a subtype of machine doubling. Slide doubling is another. The rarest is rim-restricted design duplication.

 

Found another on a 1998-P quarter. Push doubling must be pretty common...

 

These are on the dies, though, right? They're movements tantamount to strike doubling but imparted on these single-squeeze dies, is that right?

 

from what error-ref says, it's a bounce. The die hits, bounces and then hits again slightly offset. I guess that would imply more of a problem with the press itself instead of the die? Something's loose somewhere...

http://www.error-ref.com/push-doubling/