1971-S Ike DDO

Best I could find but no pics.

http://www.conecaonline.org/content...html#_1971-S

That is a doubled die, no question about it. The only question I would have is whether this is master die doubling - meaning that the master die was doubled and transferred to the working hubs and working dies it made. If this is the case it would be on probably half the coins made that year and wouldn;t be worth anything extra. If this is a case of single die hub doubling, then you've got something that's really worth investigating.

The way to tell the difference is to find the exact same doubling on a number of different coins struck by different dies. If this shows up, then we know that at least the hub that made all the dies in this group was doubled. More commonly than not, it's the master die that would contain that doubling.

How do we tell the different coins were struck with different dies? Because the markers don't match. Same doubling, different dies - one develops a die crack, the other doesn't. We end up with the same doubling on a bunch of coins, some with a die crack and others without.

MANY of the Eisenhower dollars issued were doubling to some degree. There was a lot of master die doubling in the series, and I'm no expert to tell you which ones are and are not the result of such doubling.

Thanks coppercoins. Just figuring out the doubled die process has been tough. So many different types. Its starting to come together though.

Thanks for that info DieVarieties. What does the W stand for in wddo?. I haven't seen this book. Will have to look around for it. There wouldn't be any online reference to this that you know of would there? Again thanks.