Pismo500

From - http://www.coinworld.com/

At least four different doubled die reverse varieties have been identified on the 2009 Lincoln, Formative Years cents, and others are being reported

Since I do not have a subscription, I don't have any details...

kanga

I know there's been a lot of theories put forth about how die production by a single transfer can produce doubled dies.
Has anyone come up with the definitive answer yet?

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There are 10 types of people: those that understand binary, and those that don't.

Pismo500

From - http://numismaticnews.net/article/cents_doubled/

More complete information...

grizz

........some to look for.

http://doubleddie.com/60701.html

Pismo500

from http://www.coinworld.com/

Formative Years 1¢ doubled die count reaches 11 varieties
Excitement continues to build over newly discovered doubled die varieties found on the 2009 Lincoln, Formative Years cents as reported in the June 22 issue of Coin World. The count now totals 10 reverse varieties and one obverse variety

Razor

11 varieties is just insane. That tells me more about the sad state of mint quality control than anything else. The only guys that are going to make money on them are the guys selling the collector folders, Whitman, Dansco, Littleton, etc. Hey, if you collect 'em all you need a place to put 'em, right?

Leadfoot

Let the pumping & dumping begin!

Does anyone have an high-leaf or low-leaf quarters they want to get rid of?

Cynically yours...Mike

desertgem

If you look at the billions of cents produced by the single squeeze hubbing process, it is an indication that even the best of machine operations can produce unexpected results. Either a series of conical die blanks were slightly off ( some say tilting of a fraction of a degree can cause the "chatter" ( don't know the proper term) or the holder of the blank was slightly off. The mechanical reason for this variation gave the series of Doubled dies in a series of runs before corrections occurred ( assumption). It would be expected that each DD was a single die run and limited in number. Due to the rush to get the mint rolls ready was probably a factor. It appears most of the cents from this situation peaked in the packaging of the mint rolls of 4/23-5/1.

I have not heard of any yet from OBW rolls/bank boxes. They seem very common now as each one that is found seems to be announced in a forum ( mea culpa). When the dust clears, I expect each to be about a die run's worth, but since most seem to be recovered, the population should be high. IMO.

Jim