1985 D MM

[fiddle-fart]

never seen a full MM under a normal MM



is a good on to keep?

Mike

[eagames]

I believe it's die wear. Similar to this one:

http://www.coppercoins.com/forum/viewtopic.php?t=4687

See what others think.

[Dick]

Mike, it is a ZINC abortion. Notice the "8", has the same kind of appearance. Sorry but this one is not a keeper, (unless you are a "Zinc" collector). That is a combination of die wear, and a crummy alloy for our coinage.
Dick

[fiddle-fart]

silly question

Now would die wear and or Zinc abortion cause the mm to rotate like this one.

sorry I ask and or post alot, but I want too know...

maybe one day I too might get smart
( missed it by that much)

[coop]

The plating may have cut just a little and the zinc is starting to react in that area. That happens a lot on the Zincolns'

[CoinboyJay]

Zincolns, I like that!!

Mike I've seen that area you're looking at "break" and expose the zinc underneath, so I think coop is on the right track when he says it is starting to react. Dissimilar metals?? Striking pressure??? I don't have the answer.

I have learned the trick is, like Dick said, the same effect can be seen on the date also.

I know it's hard to throw that coin "back", I've had to do it A LOT. But guys like you and me are lucky we have the internet and almost instant feedback from the folks that know what's real and what's not. It takes a little of the frustration out of learning.
Good luck & keep looking.

Cheers,
JAY

[Dick]

Mike, I didn't mean to sound sarcastic, but I have very little rspect for the zinc coins as a whole, (ours especially, because they just don't "measure up to the coins made of the same alloys, and the way they have withstood the test of time, and circulation. I refer you to the Canadian zinc alloy cents, which do show a lot of forethought, in the making of the strip metal for the blanks) Niw, the zinc plating is so thin, that almost any pressure, or ding will perforate the skin, which allows air to enter. That in turn causes a chemical reactionm, due tio dis-similar metals. It can actually be read on a sensitive volt meter, ( the electrical difference). All tose "bumps, lumps, ridges, and just aboput any other shaped area that rises above the plain, (firld level), will be caused by the dat that is generated by the reaction. Hope this helps!
Dick

[Dick]

Mike, I hit the wrong button, and posted twice. I couldn'd find the "delete button, so I'll just edit it, and winder what those little guys are hiding behind the fence for.
Dick

[fiddle-fart]

[fiddle-fart]

well they aint saying HO HO HO