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 Replies: 8 / Views: 1,726 |
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Pillar of the Community
United States
1490 Posts |
Here is a 1964 Roosevelt dime with a DDR. All of the reverse lettering appears to be doubled. Is this a FS-10-802?  If not does anyone know what the attribution would be for this dime. Thanks      |
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Pillar of the Community
United States
7123 Posts |
Hi Jim This Dime is different from the other that you posted all of the doubling at least that which is in the close ups appears to be Mechanical Doubling . Notice that none of the serifs on the letters show any splitting . The doubling occupies the same space as the normal number ,, the doubling has a shelf like appearance. These are all characteristic of Mechanical Doubling. Mechanical Doubling carries no value . Metalman |
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Pillar of the Community
United States
603 Posts |
Lets see if I have this yet. Mechanical Doubling is from the die striking twice on the same coin, while a double die is from a die somehow haveing two impressions of the master hub? |
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New Member
United States
6 Posts |
i don't know anything about the attribution but nice coin.
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Pillar of the Community
United States
7629 Posts |
Definitely Machine Doubling, no question about it. Cpfull - Mechanical Doubling is from a loose die making a double bounce on a planchet during a single strike...not from a die striking a coin twice. Doubled dies are much more complicated, but involve the process of squeezing the design from hub to die a number of times to impress the design completely into the die. If the die is not refitted into the hubbing press identically between hubbings, the result is doubling of the design on the die, thus a hub doubled die. To tell the difference - they look different, very different. The difference is obvious with just a little experience viewing the two. Machine Doubling is always flattened out, shelf-like, it takes up part of the profile of the normal letters, and never has corner notching indicative of overlapping design elements. Doubled dies generally have all the characteristics that Machine Doubling doesn't. |
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Pillar of the Community
United States
7629 Posts |
JimR - Something to learn here about doubled dies. ALL of the coins minted with a doubled die reflect the design of the doubled die EXACTLY. In other words, they are never 'close' to the one in the book, they actually match the one in the book in every respect. Even if your coin was a doubled die (which it isn't) your coin couldn't possibly be FS-10-1964D-802. Reason? It wasn't minted in Denver, and ALL the 802s were minted in Denver...same as the 801s.
Second thing...let's pretend your coin was a D mint for a moment. Look at the O of ONE on your coin. It shows no doubling, while 802 does. Cannot be the same die, 100% for sure, because the doubling in the photo and the doubling on your coin are not EXACTLY the same.
Think of a doubled die as a fingerprint. EVERY coin minted by a hub doubled die carries the exact same fingerprint. The doubling is the same, even the markers are generally visible from one coin to the next. This is how attributors classify the coins by die.
Case in point, if the doubling on your coin doesn't match the photos in a book EXACTLY, you can't have the same doubled die.
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Valued Member
United States
191 Posts |
Thanks for posting coppercoins. This is helpful info for me.  |
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Pillar of the Community
 United States
1490 Posts |
Bummer.  But thank you Coppercoins and Metalman for the explanation about the difference between Machine Doubling and a double die caused by the hub. It seems though that maching doubling is a relatively rare occurence, albeit not as rare as hub double dies, and thus would add some value to the coin. I understand that it doesn't I just wonder why that is. Any thoughts or rationale? Coppercoins-My CherryPickers Guide has FS-10-1964-801 and FS-10-1964-802 listed for the Philadelphia mint dimes. This is what I was referring to. You are correct though that the doubling does not match the doubling in the photos.That is why I was wondering whether it was an FS-10-1964-802. Thanks again you all for the input. |
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Pillar of the Community
United States
7629 Posts |
Sorry, not used to their new system. I didn't realize coins of a different mint could share FS numbers like that. Didn't used to be that way. You're right, there are 801 and 802 dies for 1964 Philly too.
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Replies: 8 / Views: 1,726 |
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Posted 02/01/2007 8:02 pm
