This Indian Head Cent looks to have some strange looking chiseled doubling, but I'm not sure that it's PMD, although it very well may be. Is it a strange version of die deterioration doubling? It's as if the coin became stuck between the dies during its strike, and vibrated multiple times before eventually getting spit out. Thoughts? Thanks in advance!
I'm going with ball point pen doubling; as in someone traced around the devices with a ball point pen.
It looks like it didn't seat in the coining chamber correctly. It may have received a light initial punch when it was not properly seated. Then when the coin seated the dies made a complete punch. Basically it was punched twice.
Assuming it is genuine (which I'm not sure of), that is the sort of look I've seen on coins that were acid washed. The acid eats away at the surfaces, and leaves a shadowy look. I don't believe it is something which occurred through normal minting processes.
I want to share this webpage with you - https://www.coincommunity.com/forum/topic.asp?TOPIC_ID=108815
Nah... Edit: okay, well maybe after seeing that image. Though that's not what I've always considered to be Longacre doubling.
Nope, not on this piece. First, Longacre doubling usually uniform around each letter (the leading theory is that the letter punch was driven into the die too hard, and the "doubling" is from the shoulder of the punch). You see that on this coin, it is random. So no, definitely not Longacre doubling.
What do you consider to be Longacre doubling? Here is an article about it: http://www.error-ref.com/longacre-s-doubling/
I've always thought of it like the image in the article that you linked, but I'm not sure how a deteriorated die would look and if it would ever go as far as the coin that the OP posted.
I agree not Longacre doubling , and I am also on the fence as to it being real "genuine" I do suppose acid or some sort of whizzing be it tooled or chemically induced.