South Carolina State Quarter DDO?

That's what I figured. I wonder why they don't value this more? This is one of my easiest to see doublings. I can clearly see the letters on top of a fat blob base letter. I think this should have a higher value. I guess it is very common. This is a good find for me.

Since it is on a proof coin, do not sell yourself short on its value. Some people do collect Machine Doubling, so it could fetch a bit more than you think in today's market.

BJ Neff

the reason its not valuable is because its not really doubled as in it wasn't struck by a die that had doubling. it is just plain ol wear on the die and it makes it look like its doubled when in fact it isn't so there is nothing out of the ordinary happening because all dies wear but not all dies have doubling. This is how I understand it anyway, I am not a error collector so I may be incorrect but from what I have read thats what I understood to be the c ASE

I Just find it odd that the mint doesn't keep a closer eye on the proofs to prevent these from leaking out.

One thing to take into consideration when expecting near-perfect quality coins from the mint is that they mint millions of the proof coins, and no amount of training and attention is going to catch problems on every proof coin that the mint makes. Furthermore, much of what you might consider problems, errors, or otherwise are usually microscopic in nature, which exceeds the quality standard the mint is working to achieve. Their quality standard is that the coin should look correct as a proof coin as the person views it with the naked eye. Off-center coins, clips, and other obvious errors are what are of concern (and value) in proof coins. Striking problems that take a microscope to see are not of concern to the mint.

The difference between minor Strike Doubling and a minor doubled die is very evident with proof coins because the standards are more strict and the dies are examined one by one under magnification before being used to mint proof coins. Anything on the die that takes away from the design not as intended is scrapped - which means finding doubled dies on proof coins should be (and often is) far more difficult than on business strike coins...but this does not apply to the coins one for one as they come off the presses. Individual coins are not inspected except in spot checks to assure die quality.

This is one of the major things that makes die varieties different from varieties and again different from errors. They happen at different stages of the process, some are intended and others are not, which simply makes them completely different from one another, ergo they have different definitions and different crowds of collectors. I, for instance, collect die varieties and could care less for errors.

Well anyway you look at it.. it's cool and it's a keeper