Bicentennial 50 Cent Piece 1776-1976 (Ddo?) Any Suggestions Are Appreciated

I suggest you tell us what you are seeing.
John1

Also what is it called when it looks like (for example in the Liberty or the United states lettering it "Looks like its doubled) Thank you for the school lesson I'm learning.

Regards-

Well there are three types of doubling.
1. Machine Doubling that is not a doubled die, but caused by the machine that alters the devices right after the strike. No premium for these as they are common.




2. Die wear and on the single squeeze dies the DDD (Die-Deterioration-Doubling) This also has no premium as when the dies are wearing out the dies devices move to the direction of the closest rim.





3. Doubled dies. These have the doubling on the die by hub movement, hub distortion, using a different hub is is not worn. Single squeeze dies that have class 9 doubled dies. (Starting off incorrectly, then snapping into the proper location. This will make a kiss on the and when it snaps into the correct location, it removes all the unwanted doubling, except in the center of the design. (Thus you look for doubled dies in the central areas of the designs)

Multi-hubbed dies:

The center one is a normal die. The upper and lower are the two doubled dies on these 1909 VDB cents.

Note on the lower image, the devices are wider/taller. (depending on the direction of the spread)





Side by sides help show what is doubled. It is good to make these to see if it is the same or if the devices are enlarged.







Note on these two they are two different doubled dies. Seeing them side by side, then you can see what is/isn't doubling on each doubled die easier.



DDR quarter SBS normal - DDR:

Single squeeze dies that affect the centers of coins:
Cents:




The dates and Liberty are the areas where most of the DDO cents are found on the newer coins. But they can vary.
Newer Nickels:



Newer Dimes:

States and ATB Quarters:

Ears and sometimes on the closer areas of the motto.






Note how the devices are wider/taller on the doubled dies? This is on the dies. (thus the term) These are not caused by Machine Doubling. (But Machine Doubling can happen even on doubled dies) These are not caused by miss hub dies, but can also be affected by die wear. So most machine doubled coins are easy to find. A doubled die is a lot harder to find. Thus the value for one is like gold because it is rarer. Machine Doubling is not a premium coin, because it is not die doubling, but machine altered after the strike. Die wear show on the last part of life for a die and adds not premium for them. They are less desirable because of the die wear. Hope this helps?

CoopHome Die wear Machine Doubling and SBS doubled dies