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Scanning Coins A No No? Double Die Obverse

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Valued Member

United States
111 Posts
 Posted 07/28/2017  9:48 pm Show Profile   Bookmark this topic Add PilcrowsCoins to your friends list Get a Link to this Message Number of Subscribers
Hello Everyone,

Being new to coin collecting, I been trying to figure out the quickest ways to look at large amounts of coins for double dies/errors ect. So I been placing my coins on my scanner and looking through them that way. Here and there photos like this one I'll post will pop up. Were the coin looks like a double die. Then I pull it, can't see anything to the naked eye. Take a photo, can't see it still.. But some how the scanner sees it.. So, after the long rant, My question is. Is scanning coins a no no and does it false advertise?
Does a double die stick out to the naked eye if its something like this photo or only in high def pictures?
As always, thanks for tips/info.

Scanning-Coins-A-No-No?-Double-Die-Obverse

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Bump111's Avatar
United States
3327 Posts
 Posted 07/28/2017  10:12 pm  Show Profile   Bookmark this reply Add Bump111 to your friends list Get a Link to this Reply
I say do whatever works for you. Lighting seems to be the real important aspect in looking for errors. If that isn't right, it can make almost anything look suspicious.
"Nummi rari mira sunt, si sumptus ferre potes." - Christophorus filius Scotiae
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histman's Avatar
United States
52 Posts
 Posted 07/28/2017  10:21 pm  Show Profile   Bookmark this reply Add histman to your friends list Get a Link to this Reply
I agree. Whatever works for you. Would help with my eyes.
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Crazyb0's Avatar
10197 Posts
 Posted 07/28/2017  10:24 pm  Show Profile   Bookmark this reply Add Crazyb0 to your friends list Get a Link to this Reply
Ahh, Padwan! Most big time DDO / DDRs will pop out to the naked eye like these examples:

Scanning-Coins-A-No-No?-Double-Die-Obverse
Scanning-Coins-A-No-No?-Double-Die-Obverse
Scanning-Coins-A-No-No?-Double-Die-Obverse
Scanning-Coins-A-No-No?-Double-Die-Obverse

There are trickier ones like this one:
Scanning-Coins-A-No-No?-Double-Die-Obverse

That may take a low power 5x to see. All your coin is showing is MD, mechanical damage:
Scanning-Coins-A-No-No?-Double-Die-Obverse


You need to do two things. 1) Learn about true Doubled Dies and the years to look for instead of trying to find at random 2) when CRH, set aside those dates/MM youre seeking by piles. Then go back to each stack with references handy to know what your looking for.

I went through a $25 box last weekend in a little over two hour sorting that way and another hour looking for specifics.
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coinlover1899's Avatar
United States
3058 Posts
 Posted 07/28/2017  10:25 pm  Show Profile   Bookmark this reply Add coinlover1899 to your friends list Get a Link to this Reply
I personally think that scanning makes blurry pictures, so I would try to take your pictures with a camera.
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bobby131313's Avatar
United States
24180 Posts
 Posted 07/28/2017  11:18 pm  Show Profile   Bookmark this reply Add bobby131313 to your friends list Get a Link to this Reply
Scanning not only produces much less desirable images than even a cheap camera it takes 100 times longer.
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Beefer518's Avatar
United States
887 Posts
 Posted 07/28/2017  11:40 pm  Show Profile   Bookmark this reply Add Beefer518 to your friends list Get a Link to this Reply
The problem with scanning is that the light is moving, so you're getting multiple areas of reflection, which will trick you into thinking there is something there, when there isn't.
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jnesbitt82's Avatar
United States
191 Posts
 Posted 07/29/2017  12:38 am  Show Profile   Bookmark this reply Add jnesbitt82 to your friends list Get a Link to this Reply
This is what I do. I have multiple plastic cups set up with index cards in them. On the index card, I write whatcoins go into them. For example,
Cup1---2009 lincolns
Cup2---98,99,00 lincolns. Looking for WAMs
Cup3---95 lincolns. Looking for double die
Cup4---92,94 lincolns. CAMs, double die
ETC.
To decide what years you want to sort out, look here for ideas on what to find.
http://lincolncentresource.com

Now after I sort the coins into year specific groups, I go through the cups looking for that specific error/variety. Each coin is put under my microscope like this one.
http://www.ebay.com/itm/AmScope-SE3...AOSw5UZY9mT6

My microscope was a great investment and has had tens of thousands of coins under it. Hope this helps!
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John1's Avatar
United States
56855 Posts
 Posted 07/29/2017  05:35 am  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
Scanning coins a no no,yes yes. Even a cheap-o camera is much better for taking and posting pics. For searching,a 10x loupe will work unless you have eye problems. In that case use a 12x or 14x,stay away from anything higher in power.
John1
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BStrauss3's Avatar
United States
4594 Posts
 Posted 07/29/2017  10:37 am  Show Profile   Bookmark this reply Add BStrauss3 to your friends list Get a Link to this Reply
Scanning's problem is both the moving light discussed above and the basic physics of the scanner which is multiple small image sensors focused just above the glass (where a sheet of paper would be) so it doesn't capture the depth of the 3D coin very well.

A camera that supports "Live View" is a better choice. You can then put it on a little tripod, with a lamp set at the right angle and hook it to your computer or tablet. This gives you a full screen sized image and is real-time.

You could even 3D print a little tray with openings for coins, load them and slide them in front of the camera for a rapid scan.
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Life member: Numismatics International, CONECA
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bobby131313's Avatar
United States
24180 Posts
 Posted 07/29/2017  11:05 am  Show Profile   Bookmark this reply Add bobby131313 to your friends list Get a Link to this Reply

Quote:

A camera that supports "Live View" is a better choice.


I do that with my Canon and 100mm lens. Heck, I can do Print Screen and paste into my editing software and get a pic 500 times better than scanning without even snapping a picture.
Valued Member
United States
111 Posts
 Posted 07/30/2017  08:57 am  Show Profile   Bookmark this reply Add PilcrowsCoins to your friends list Get a Link to this Reply
jnesbitt82: Thanks for the source material and scope. I'll check into getting that one.

BStrauss3: thats a really good idea, I'm going to try it out today with my slr and see how it goes.
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Errers and Varietys's Avatar
United States
74963 Posts
 Posted 07/30/2017  6:54 pm  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
It depends. It it works for you, then yes. If it doesn't, then no.
Errers and Varietys.
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