2012 Grey Cup Loonie Double Or PMD?

Hard to see from these pics UncleLuc.
Can sort of see the bottom of the A in REGINA.
Need a nice close up shot. Maybe turn the coin
and shoot from the other direction to show the
bottom of the letters. That is the obverse of
the coin you show. Not sure how this doubling
could be PMD, it is likely Machine Doubling.

What is the difference between Machine Doubling and a double strike? Is my error caused by a loose die that slid a little? As I said I'm brand new to error and variety research and I'm not too sure in the values atributed to each type of error... what would these types of doubled coin ls be worth? And would mine be considered "heavy"? I know its no 1955 wheat, but the doubles seem pretty obvious.

Well Silverdon..
I know of machine doubles and ejection errors from a loose die, but the weird thing about this coin is that the reverse suffers no doubling. It is actually a really clean reverse, with all the edges being very sharp..what would cause only the one side to be doubled? Possibly ejected and bouced off the top die? I'm confused... and are these errors vauable/popular? I pulled the loonie out of everyday pocket change jar and noticed the error by fluke just before I purchased something! Is this piece 2x2 worthy?

Officially taken out of circulation. I still cant seem to find any pricing info on this piece or anyhting similar really...I know its no 1955 Wheat penny double but is this on the heavier side? I'm not a huge fan of error coins and would much rather sell or trade this piece to possibly fill out some countries I'm missing or maybe a new mint set or something...what could I price this loonie at and be fair? And whats an average premium paid on doubling errors?

The doubling on your coin is flat and shelf-like, just common Machine Doubling. It is caused by the die moving during striking, flattening the already struck elements. It can happen in one or both sides.
Here is the page from error-ref: http://www.error-ref.com/push-doubling/

It's not a double strike. A double strike will look completely different. There's an example of it in the error-ref page above.
Also, C&C has a couple of nice photos on double struck coins: http://www.coinsandcanada.com/coins...everse&id=38
These ones are flip-over double struck: http://www.coinsandcanada.com/coins...bverse&id=39

The 1955 Wheat cent you're thinking about is a doubled die (you need the last d in doubled die, or else it will mean something different, I'm not going to cover that now). A coin die used to be hubbed more than once, and annealed before each hubbing. If the die is inserted in a different position in the next hubbing, a doubled die will result.
Read on how dies are made here: http://www.doubleddie.com/58201.html
And doubled dies here: http://www.doubleddie.com/58222.html
Here is coppercoins' thread about doubled dies vs Machine Doubling: http://www.coincommunity.com/forum/...PIC_ID=51410

I don't consider this kind of Machine Doubling as an error and this doesn't bring a premium.

I know that this is a lot to take in at once but you will have answers to what you're uncertain about.

When I looked into tge references and compared them to mine it looks more like hub than Machine Doubling....I might just have bad eyes but it seems like there 2 sets of numbers, letters and bust, and its not just the edges being shifted...when I look at the E and R of regina, it looks like there is notches between the two letters...I may be wrong tho...any thoughts?

SilverDon said it best. It's worth what someone will pay. On occasion I buy doubled coins but they have to stand out to me. In general people are selling them on ebay for about 150 bucks in a sealed set from various years. Considering there's a buy it now option I'd pay a small premium over issue price depending on scarcity and no more. Probably why their still for sale too! A single coin in circulated condition to me, No more than a few bucks over face if it's a nice machine double in the right place.