1999 LMC Is This PMD Or An Error

That is an area where die clashes happen:



Also note the obverse die is slight out of alignment. (MAD Mis-Aligned Die) Making the clash mark even closer to the affected area during a clash. Just a die event.

I am not seeing a die clash. Roller lines is the first thing that came to my mind.
John1

OT question for all. Is the Obverse off enough to be considered "Off Center"?

Not an off center. Note the reverse is normal. It is a MAD coin, but not enough to be collectable. (MAD = Mis-Aligned-Die) The setup of the location of the obverse die was not exactly over the reverse die. Thus the rim is not formed correctly on only one side of the coin. They are collectable when the devices are seen falling over the edge of the coin:

How can you tell when they are collectable? When the devices fall over the edge, there will be a weakness seen on the opposite side of the coin:







CoopHome: What is a MAD coin? How does this happen? miss-alignment of one die will make the obverse/reverse not over the opposite die. thus one side is affected. this can happen on both dies, but the miss alignments will be different than an off center strike. (rare)

Thanks for the info on my "Off Center" question!

No,two different things.
John1

I am with John1 as well.