A variety is an unintended chacteristic transferred to a coin whose origins can be traced and attributed to the DIE manufacturing process (RPMs, Doubled Dies, RPDs and etc.) Mechanical Doubling's origin is traced and attributed to the COIN manufacturing process (loose die, etc.) not the DIE manufacturing process.
Machine doubling is not on the die so it is not an issue like a doubled die coin. It is essentially a random happening at the point of strike due to a bouncing , twisting, or scraping of a die across the face of a coin at the moment of the strike. The ejection of a coin from a die can also be a culprit in machine doubling. One die can produce many coins with machine doubling, not because the doubling is on the die but because the looseness of the die in the coining press, for one example is the same from coin to coin to coin, etc. The OP's coin is not a doubled die, and none of it looks like anything but Machine Doubling.
Also, I'm not going to argue with anyone on this point, but machine doubling is not even considered as an error since it is a 100% normal result of the minting process. If it were not normal, it wouldn't be so common. The Mint doesn't care if a coin produced exhibits machine doubling. The only people who consider machine doubling as an error are those who use an Old Frank Spadone book as a bible and are trying to sell these things on eBay.
Frank is on the mark in his postings. I have a Spadone book, and it is humorous reading if one really does understand errors and varieties by today's knowledge and standards. It is unfortunate that so many get an incorrect idea of these from Ebay pushers, where everything is a DD or 'possible DD'. Much is from misunderstanding , and that is correctable if the recipient is willing to learn. What is worse, and often occurs on this forum, is intentional misinformation and using unintelligent/unknowing explanations to seemingly try and throw the inquirer off with 'self made' definitions and chatter ( a mint term ) Don't be fooled by charlatans.
non-cents...why do you almost never mention http://www.varietyvista.com/ as a source for varieties? I think James Wiles has some very good e-books and information there. Larry Nienaber
It usually slips my mind...it is definitely a good site and I have nothing against Wiles. I myself rarely use the site, but by all means I would suggest others to use the site.
Darn!! Yet another another site I have to start using. This whole coin thing is getting to be a chore