2001 $2 Coin Error! Please Help! Is This Double Struck Or DDD?

Looks like Machine Doubling.



to the CCF!

Very interesting coin. I'm curious as to why the effect only happens on part of the coin.

Seems to be similar to some of the die clash coins- the evidence of clash is visible but only on a part of the coin. Why does it happen that way?

From what I understand, the Machine Doubling is a result of the die rebounding back onto the coin after it has been struck. To the purest, once the coin has been struck, anything that happens after that instant is not considered a mint error ( yeah I know, I'm scratching mine too).
So anyway it rebounds and bounces back and somehow, doesn't exactly match up. If this is the case then there must be a small amount of flex in the hammer die as it travels up and down, worn bearings for instance. When it strikes for the second (or third or fourth) time, the die drags down some of the devices reducing the width of them (@coop has an exhaustive series of videos and posts on the matter).
On an actual DDO or DDR this is not the case. There is only one strike which results in the double image already on the die being stamped into the blank. I can't get my head around how a double image gets from the hub onto a die I'll leave that for someone who knows.
But for an example of a Double Die Obverse , click this
http://goccf.com/t/79097&whichpage=27#3755524 ...... and scroll down to the second pic.... a 1981 50 Para from Yugoslavia.