Coin Community Family of Web Sites Join Thousands of Coin, Bullion, & Money Collectors
Vancouvers #1 Coin and Paper Money Dealer 300,000 items to help build your collection! Royal Estate Auctions - $1 Coin AuctionsCoin, Banknote and Medal Collectors's Online Mall Royal Canadian Mint products, Canadian, Polish, American, and world coins and banknotes. Specializing in Modern Numismatics Join Thousands of Coin, Bullion, & Money Collectors








Username:
Password:
Save Password
Forgot your Password?


This page may contain links that result in small commissions to keep this free site up and running.

Welcome Guest! Registering and/or logging in will remove the anchor (bottom) ads. It's Free!

Scanning Dateless Coins With Acoustic Microscopy

To participate in the forum you must log in or register.
First Page  Showing last 15 replies.
Author Previous TopicReplies: 17 / Views: 3,554Next Topic Page 2 of 2
Pillar of the Community
United States
880 Posts
 Posted 01/07/2011  06:14 am  Show Profile   Bookmark this reply Add lukkyseven to your friends list
I feel like that might not happen. Maybe, but for the dumb people out there (myself included), they might not trust a TPG with some "doctored" image. When you look at it, it's still a dateless coin. Even believing in modern science, you'd still be looking at a dateless worn coin.
Pillar of the Community
United States
3294 Posts
 Posted 01/07/2011  11:51 am  Show Profile   Bookmark this reply Add nod2003 to your friends list
I would wonder if the resolution on those methods would be good enough. I mean the density difference is probably pretty tiny, and coin dates are not that large. A good idea to try out if someone has equipment.
Pillar of the Community
United States
608 Posts
 Posted 01/07/2011  12:11 pm  Show Profile   Bookmark this reply Add bill069 to your friends list
Hey, I have the dateless coin!
Pillar of the Community
United States
958 Posts
 Posted 01/07/2011  8:23 pm  Show Profile   Bookmark this reply Add coppertop5150 to your friends list
a nice " suspect " dateless 1916 SLQ slick

The image for that one would only have to show a slight curve af the 6 bottom
or Bar going across of a 7
to show if its a 16 or 17
Pillar of the Community
Learn More...
United States
2448 Posts
 Posted 01/07/2011  9:36 pm  Show Profile   Bookmark this reply Add carmykle to your friends list
Sounds neat , but, "Good Grief", how much will it cost. I don't like having to pay for a chest x-ray much less an IHN or SLQ scan. I think there might be a break in price if you did several hundred at a time. Unless you own the equipment, I'll bet you're just making the x-ray tech rich.

Also, when we did NDI (non-destructive inspections) on aircraft parts, we had to use a pretty hefty machine. Actually it had it's own truck and trailer. Not that I really know, but where would you go to find a machine with the power to scan through certain alloys?
Pillar of the Community
United States
4989 Posts
 Posted 01/07/2011  11:21 pm  Show Profile   Bookmark this reply Add fenton to your friends list
I'm not sure I would trust that technology it would be easy to fake a machine that appears to recover lost dates but, in truth, just pencils them in with software.
Pillar of the Community
United States
958 Posts
 Posted 01/08/2011  01:35 am  Show Profile   Bookmark this reply Add coppertop5150 to your friends list
well right now it seems like it may not be econimical if it can be done....at this point in time with todays technologhy it might be able to be done, just 20-30 yrs ago it prob could not be done at all.
Just seeing if it can be done ,If it can in itself is a giant technological advance in the industry

But the future always makes technology cost cheaper...At one point 1987-89 a IBM home computer with 286hz ,256k minitor ,b&w printer and 20mb hard drive was almost $2,000 and it was up to date at the time. While now a days you can get a up to date home coumputer for $500 +/- with rebates and so on...
That was just 20 yrs ago.

So who knows maybe in another 20 yrs things like dating datless coins might be a common practice and very economical or maybe sooner

Cramykle,
In aviation when testing in a non destructive way small parts they use magnaflux ( metal/dye fluid and a magnet under florecent light to see micro cracks )
For small parts the size of a coin the equipment is not costly and can be had for a few hundred bucks.
Auto repair shops use the same technology for detecting cracks in heads and engine blocks
The equpiment your talking aboue used for fuelcell lodges and big stuctural compenents required a giant electro magnic the size of a truck

It was just a thought if it could or could not be done....
Maybe someone with the know can apply for a forensic grant. The possibilites of using it for dating things could be of help to some fields even non coin related.
Imagine getting a govt backed university grant for testing could be a neat project
Pillar of the Community
United States
608 Posts
 Posted 01/09/2011  2:47 pm  Show Profile   Bookmark this reply Add bill069 to your friends list
to get this covered we need to get it put into the new Health Bill!
Pillar of the Community
United States
1534 Posts
 Posted 01/09/2011  3:39 pm  Show Profile   Bookmark this reply Add wheatguy to your friends list
just as an FYI coppertop but proving a 1916 SLQ through that type of method wouldn't have any benefit given that there are simple diagnostics to identify a 1916 SLQ.
Pillar of the Community
United States
3294 Posts
 Posted 01/10/2011  09:05 am  Show Profile   Bookmark this reply Add nod2003 to your friends list
True wheatguy, but you could use it to find those tricky 23-s
Bedrock of the Community
United States
17884 Posts
 Posted 01/10/2011  10:56 am  Show Profile   Bookmark this reply Add Conder101 to your friends list

Quote:
just as an FYI coppertop but proving a 1916 SLQ through that type of method wouldn't have any benefit given that there are simple diagnostics to identify a 1916 SLQ.

True but the confirming diagnostics of the 1916 SLQ could be used to prove that the technique/equipment works at determining the dates on the dateless coins.
Pillar of the Community
United States
3592 Posts
 Posted 01/10/2011  11:22 am  Show Profile   Bookmark this reply Add Maineman750 to your friends list
So I could fill my Dansco with dateless coins and say they were diagnosed to determine dates ?...don't get me wrong, it sounds cool but I'm not sure it would be in great demand. With the 16 SLQ at least you can see something that is unique to that specific coin.
Moderator
Learn More...
United States
23522 Posts
 Posted 01/10/2011  11:31 am  Show Profile   Bookmark this reply Add SsuperDdave to your friends list
I wonder if the technology might have relevance in determining doctored mint marks? The 1916-D Merc comes to mind.
Pillar of the Community
Learn More...
United States
2448 Posts
 Posted 01/11/2011  11:53 am  Show Profile   Bookmark this reply Add carmykle to your friends list
Actually coppertop, we did make extensive use of Magnaflux for both large and small parts depending on what the inspection dictated. We used the X Ray machine for hidden stringers and beams in the aircraft's fuselage where we couldn't get dye penetrate to or use the scope. Especially for aircraft with multiple repairs once in an accident and placed back into service.

You are right about the way technology is improving. I don't doubt, that in the future, we'll have an I-phone App for doing a lot of what we do now. That would be nice. Cant see the Date, scan it with your phone and save it to your storage drive. Instant gratification...it's the American way! What a concept!
Bedrock of the Community
United States
20753 Posts
 Posted 01/11/2011  3:36 pm  Show Profile   Bookmark this reply Add just carl to your friends list
Regardless of now ane/or future tecnology the resurection of a date or mint mark on a coin would still make it an almost useless collector's item. Think of it. Would you buy a coin that someone said is a 1916D Mercury dime but you need a $50,000 machine to see that? Even a $10,000 one? Presently when serial numbers on guns are restored it is only to find out where it came from, who owned it, etc. Not even used on old firearms. Who in their right minds would try to restore a serial number on an old Mauser pre WW1 Machine pistol?
So someone at a coin store shows you a 1894S Liberty Head Dime and although you see the thing is worn flat, no details left at all, would you buy it? Now he shows you a statement that says under a $1,000,000 machine we now can see the details. So now would you buy it?
My point is regardless of what in the future someone can, might, could, probably do to restore a date on a coin, would you then buy it? If not, none of those processes means anything.
Of course someone on ebay might.
Page 2 of 2   Previous TopicReplies: 17 / Views: 3,554Next Topic Page 2 of 2
First Page  Showing last 15 replies.
To participate in the forum you must log in or register.


    




Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited.
Contact Us  |  Advertise Here  |  Privacy Policy / Terms of Use

Coin Community Forum © 2005 - 2026 Coin Community Forums
It took 0.32 seconds to rattle this change. Forums