A doubled die would look full and rounded like its part of the die. A double strike is flat and it happens a lot. Its considered damage to the coin. I had a very nice 1977-s quarter that was double struck and I loved it but the value was nothing because nobody wanted it. Straight 1977/ 1977 s/s.
Just to clarify, I think when you say "double strike" I think you mean mechanical doubling. The terms are 2 different anomalies.
Keep in mind that machine doubling is not "double struck". A double struck coin would be a legitimate error. Machine doubling can be caused by various methods, but they all basically take place when a die is loose and shifts during the striking process.
Oh. I was looking and typing while you posted the other post. I thought I saw some splits on ONE DIME.
Then why wouldn't you have posted the relevant picture that clearly shows the area you are talking about, and clearly shows the doubling? Heritage has the photo. You could have just as easily stolen that copyrighted photo.
I promise, the information on here is very good. People need adequate photos to give you correct answers. Most of the time doubled dies are not as easily seen as the 1955 Lincoln Cent. Many are hard to see without at least a little magnification. If you can't get a clear, close up picture of what you are seeing, people have to give their best guess.
yes trying the best but if i'm not sure i don't answer, we can lost a lot of money because somebody make wrong answer, and it's happen to me ....
i'm not expert and i'm here because i need help from expert not anybody can judge, i can help what i know .. but if i don't know or confused i never answer .. sorry for that but it's not shame to do not now, we are here to learn and help.