Maryland Error Quarter Doubling

Looks like good old Machine Doubling to me. I'd say it's worth .25 cents.

What is the other doubling that is worth somthing, and how do you tell the diferance?

Machine Doubling is very common. Like sand in value as a collectable. It is the easiest to find. Open a roll of coins and you will find a few in each roll. In a box of cent you can find very few doubleD (I made the D on DOUBLED to stand out) dies in the batch. Sometimes none in a whole box.
What is a doubled die? While the die was being hubbed the die alighnment of the hubbings are slightly different making the die doubled. The devices are enlarged or doubled. Comparing a normal coin with a coin that came from a doubled die you can see how enlarging of the devices are so different:

Note how the left side of the letters are doubled? Other examples:
https://www.coincommunity.com/forum...gular_IN.jpg
https://www.coincommunity.com/forum...ular_TRU.jpg
The die hubbing was moved in a direction so the devices are affected in a different fashion than a normal coin:
https://www.coincommunity.com/forum...ular_LIB.jpg
On this one the bottoms of the letter is affected on the doubled die.
So the overall view of this doubled die would look like this:
https://www.coincommunity.com/forum..._Regular.jpg
This is just one example of a doubled die. You may say when you found a doubled die, it is really like saying I've found a car. Cars are all different because they come from different companies. So they are different. Why are they different? Because of changes in design/popularity/pricing/how they run/longer lasting. Just as the term doubled die is used, there are several different forms of doubled dies. Even from year to year, they are different. So different that they are really an individual die difference. You may find a 1982 doubled die and think that you've found a well known example. But looking closer you note that the coins are different from a listed example:

Note the two coins are compared. But notice they are both doubled dies. But note again, the difference they are doubled are different. Different widths, heights are different. So these two examples came from different dies. So just finding a doubled die is nice, but then identifying them may be a lot harder. I will add more examples to this thread of other doubled dies, but I have a physical theropy session I have to get to very soon. But as Arnold said: "I'll be BACK."

Coop:

I think in order to be a better sample - the words on the first image should be changed from " Machine Doubling Images of the Same Coin" to " Machine Doubling on Different Coins From the Same Die"...because these are NOT the same coin, which is part of what you're trying to illustrate. I do agree they were all struck from the same die, though.

Nice example, somewhat confusing wording.

LOOKS LIKE Machine Doubling.

I thought the same thing once for a distric of columbia quarter , it was Machine Doubling others thought so as well.

Then looked on a website and relized months down the road it was actually a doubleddie ( the piano keys were doubled ) No mentionof it anywhwere. Then later ken potters website said it was a doubled die.

Id say Machine Doubling , but throw it into a box somwhere you might get a better camera and find out later the dobling might be doubleddie latr down the road

I particularly like Quarters, is there a web site I can go to to see all the valuable error quarters out there?