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1971 D Half Dollar Mechanical Doubling

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 Posted 02/15/2017  11:05 pm Show Profile   Bookmark this topic Add Paleteromanr32 to your friends list Get a Link to this Message Number of Subscribers
"ED" "ST" "HLF DOLLAR" came across this today new to CRH and am learning lots about errors. Hoping to get some info about this

1971-D-Half-Dollar-Mechanical-Doubling
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Fuzzy317's Avatar
United States
14463 Posts
 Posted 02/15/2017  11:15 pm  Show Profile   Bookmark this reply Add Fuzzy317 to your friends list Get a Link to this Reply
I believe you are correct, MD

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 Posted 02/15/2017  11:22 pm  Show Profile   Bookmark this reply Add Paleteromanr32 to your friends list Get a Link to this Reply
Awesome!! An imformative reply, thank you very much, I recently posted this up on another forum but unfortunately didn't receive replies. I am looking for any information I can get on this. New to learning what to look for. Tyvm to anyone who replies and can shed some light
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 Posted 02/15/2017  11:24 pm  Show Profile   Bookmark this reply Add Paleteromanr32 to your friends list Get a Link to this Reply
I know its nothing big but to me every coin I add in the cool bin is a win for me. Mostly I just find interesting looking coins. So far this is my first real error coin. Or at least the closest I have gotten
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Crazyb0's Avatar
10197 Posts
 Posted 02/15/2017  11:29 pm  Show Profile   Bookmark this reply Add Crazyb0 to your friends list Get a Link to this Reply
That"s an exceptional example of MD. Usually MD happens on a side/group of letters. This is all over including on the left feathers towards the inside. Don't usually see all this on one side. Awesome Keeper!

BTW to the family!
Edited by Crazyb0
02/15/2017 11:31 pm
New Member
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 Posted 02/15/2017  11:34 pm  Show Profile   Bookmark this reply Add Paleteromanr32 to your friends list Get a Link to this Reply
That's great news to hear!! I'm excited about it. I know it's not worth anything but to me this find is great!! Can you she'd some light on the feathers? Where r you seeing that. I don't have a knack for being able to catch errors. Still super newbie.
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 Posted 02/15/2017  11:37 pm  Show Profile   Bookmark this reply Add Paleteromanr32 to your friends list Get a Link to this Reply
Also I no5iced that the olive branch has a weird line along the left side of it. I'm assuming it's just part of the Mechanical Doubling
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Fuzzy317's Avatar
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 Posted 02/15/2017  11:44 pm  Show Profile   Bookmark this reply Add Fuzzy317 to your friends list Get a Link to this Reply
Instead of multiple one line posts, please read this CCF FAQ about editing your post to add lines:
http://www.coincommunity.com/forum/faq.asp#edit
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Jovian's Avatar
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 Posted 02/16/2017  12:23 am  Show Profile   Bookmark this reply Add Jovian to your friends list Get a Link to this Reply
The giveaway of MD, as I have learned here too, is the flat shelf look of the doubling and the reduction in the device size. I am still having trouble identifying some examples. This one is obvious, great reference example.
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Earle42's Avatar
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 Posted 02/16/2017  12:28 am  Show Profile   Bookmark this reply Add Earle42 to your friends list Get a Link to this Reply
That is a heavy MD specimen! Most are not this pronounced. Cool find.

How much squash could a Sasquatch squash if a Sasquatch would squash squash?
Download and read: Grading the graders
Costly TPG ineptitude and No FG Kennedy halves
https://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2
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 Posted 02/16/2017  12:28 am  Show Profile   Bookmark this reply Add Paleteromanr32 to your friends list Get a Link to this Reply
Oh oops yep srry about the single liners
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 Posted 02/16/2017  12:31 am  Show Profile   Bookmark this reply Add Druu to your friends list Get a Link to this Reply
Actually, can you get a picture of the obverse too? And maybe a clearer picture of the reverse lit from the left and right sides? It looks like you might have a die clash too. Here's the overlay for the JFK half.

1971-D-Half-Dollar-Mechanical-Doubling
I can't tell from the picture, but I think I see the faint curved outline from the right wing to the center of the arc of stars. Even if it's not also a die clash, it's a good example of Machine Doubling. MD is pretty common on the reverse of JFK halves, and it usually manifests on the HALF DOLLAR text.
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CoinMasters's Avatar
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 Posted 02/16/2017  12:32 am  Show Profile   Bookmark this reply Add CoinMasters to your friends list Get a Link to this Reply
The die had a little unintended movement when it struck your coin, altering many of the devices. The error is a form of MD called Strike Doubling.
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 Posted 02/16/2017  12:59 am  Show Profile   Bookmark this reply Add Paleteromanr32 to your friends list Get a Link to this Reply


1971-D-Half-Dollar-Mechanical-Doubling
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coin197's Avatar
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 Posted 02/16/2017  01:02 am  Show Profile   Bookmark this reply Add coin197 to your friends list Get a Link to this Reply
That is a very nice example of MD. Generally, I would pay a small premium for something like that.
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 Posted 02/16/2017  01:09 am  Show Profile   Bookmark this reply Add Druu to your friends list Get a Link to this Reply
I can't be positive, but it does look like the obverse die was polished a bit. Do you have other half dollars from the same year on hand? It looks like the bridge of JFK's nose is thinner than it should be. I just compared to a stock image of a 1971 D. It can be difficult to capture in a picture, but you can try tilting it at different angles in light to see if you can match up any of the other die clash marks present in the overlay.
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