You are looking at the areas where Machine Doubling
and die wear are most often found. A DDO
will be seen on the devices as a wider area on the centers of the devices. This doubling is on the die, not caused by die wear or the striking process. ( Machine Doubling
) If the devices are normal sized, it is not a DDO
. Seeing the differences through the years compared with a normal die, would be more helpful for you:
Note through the years the side by side comparisons, that show extra width of the devices. (Even though they may look like Machine Doubling
, they are wider. Compared with normal die and DDO's:
Note the spread on these DDO's? Wider/taller on the devices compared with normal coins:
Note the devices are wider vertically?
Note on each set of images, the differences between a normal die and a Doubled Die:
You are training your eyes to spot the differences.
Note the size differences?
Note the spread differences on the devices:
Some years (1972) the dates will be affected so you can spot them a lot fast. Note the '9' shape differences between a DDO and a Normal coin:
Some devices are altered differently on Doubled Dies:
The different die numbers can be different? Why? Because the hub doubling is different. (More than one listing for doubled dies)
Different areas are affected by different hub doubling:
EPU on Memorial Cents:
On the single squeeze dies on cents, the hub doubling is different. Sometimes it is a distortion of the devices shapes:
Note the distortion of the Doubled dies on the Single Squeeze dies:
Even the slightest differences are fingerprints to a certain die
Different die numbers.
These are images of the same die number compared with a normal example.
Can your eyes spot this a lot better now?
Now look at the differences between a Normal/Machine Doubled/DDO looks like side by side?
See the differences now? Machine Doubling is a removal of the contour on a coin, thus making the devices smaller in size. While hub doubling (Doubled Die) enlarges or even creates a second set of devices on a coin?
Is this helping to train your eyes? If so you are finally starting to see the differences on a doubled die/normal die and an altered post strike coin. CoopHome
: What is the differences between a Doubled die, A normal Coin and Machine Doubling?
Spread on Doubled dies, normal sized devices on normal coins and reduced contour on Machine Doubling
. Don't forget to use your glasses on these images to see even more.