Here is a good way to train your eyes as to what to see on a doubled die. I'm going to show your how to read the sites to under stand more about the doubled dies. 1957 DDO-001http://www.varietyvista.com/01a%20L...7PDDO001.htm
Open this up on a different tab and we will examine it to see why it is a doubled die. So when you open it, you see all kind of images on all areas of the coin. But note the description:
Description: Extra thickness on LIBERTY and date.
So forget the other images just the ones that are the DDO
. Liberty and Date. Those are the doubled die devices. Why are all the others there, in case you are trying to match up dis scratches to determine die states. But look at the date and Liberty. Those are the affected devices. Note the top line:1957 DDO-001, 1-O-VI
This tells you this is die number one. But what do the 1-O-VI
mean? That is the older script they used to use when they identified the dobuled die class number. So what does this formula tell us? the '1' is the first die identified, often the strongest example. -'O'- means it is a DDO
. If the letter was an 'R' then it would be a DDR
. So what does the 'IV' stand for? This is a class 6 doubled die. What does that mean?
That tells us that the devices affected in certain areas are showing doubling. So look at the date and note what looks doubled there? Note all the date digits are enlarged. The '1' is almost curved. Class 6 doubled dies show a spread most of then on the 957 digits, but on this one all are hub doubled. Now look at Liberty? Compare the devices to the coin you posted. Note how the devices are showing spread in the centers of the digits? The 'IBE' on the bottom left almost look like arrows. That is what the class 6 doubling affects. Note the the 'RTY' that the width of those devices are also enlarged. So the rest of the images are normal. Some will look at those and try matching them to their coin. Well guess what? They all match, except for some. Well the ones on the description are the only ones affected. Those are the ones to match up to. So all the devices must match the hub doubled examples, exactly. If not, they are not from that die, or they are another die that may be listed. So by studying what to look for, then look in those areas on other coins. That is what to look for. The spread of the devices on the centers of the devices. Most have a normal coin and don't see any hub doubling, but start looking at the outside edges of the devices, where all the Machine Doubling
happens. If you don't see the wider devices, then move on to the next coin, rather look for the common Machine Doubling
. Know what to look for, and THEN, you will find it. Reading the information trains your eyes on what to look for. Eventually they will help you spot something, perhaps when you are getting rid of the coin, something will bring you back to it. Your eye spotted something that your brain didn't associate with a doubled die. So training the eyes are important. Hope this helps?