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 Replies: 399 / Views: 80,228 |
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Pillar of the Community
 United States
4000 Posts |
 That's funny svslav! weavus, good question. This is not "die stutter", that would result in Machine Doubling that trips new collectors up every time until they learn the difference. I've fallen for it a gazillion times, but now know what Machine Doubling looks like. Doubled dies have the doubling on the dies themselves when it is hubbed. So, EVERY SINGLE COIN that those dies mint will have the exact doubling on them. Where Machine Doubling is random and generally has no consistency. Now, as to why parts of the die are doubled and other parts are not, is just slightly over my head right now. That's the next part of my studies. There are different classes of doubling that I need to learn yet. Depending on which way the rotation occurs when the die is hubbed determines it class. As I tried to get educated, I will attempt to try and help explain this process, but hopefully one of our resident pros can step in and give us an answer to satisfy our immediate curiosity. Edited by Scooby Due
01/26/2011 12:55 pm
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Pillar of the Community
United States
539 Posts |
Quote:
Doubled dies have the doubling on the dies themselves when it is hubbed. very interesting (at least to this newbie) Given what I have read about how this occurs, that seems to point to pretty bad quality control or perhaps, they just didn't care. They were thinking get the coin out not what collectible am I creating. so assuming you found two coins of the same type, if the whole production run was done with one die (which seems not likely) all would have this but it seems that if that was the case Krause would note that. so I will assume (until one of the smarter people here tell me differently) that the collectibility comes in because different dies were used for any given production run thus providing a doubled die variety/error |
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Pillar of the Community
United States
4000 Posts |
Quote:
the collectibility comes in because different dies were used for any given production run thus providing a doubled die variety/error Correct. I must have mis-read your post the first time, but now I understand what you are saying. Yes, in theory, hundreds of working dies are created (at least for our billion coin production runs), and only a couple/few will exhibit die varieties, which is why we want them! By the way, I have a few new additions to post, just waiting for the maillady!  |
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Pillar of the Community
United States
4000 Posts |
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Bedrock of the Community
United States
10045 Posts |
I've added arrows where there is clear "notching", which is diagnostic of a doubled die.   |
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Pillar of the Community
United States
4000 Posts |
I hope other people realize that they are allowed to chime in and post! Surely there are more than 2 people here who collect world varieties.  |
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Pillar of the Community
United States
4000 Posts |
Edited by Scooby Due
02/05/2011 2:18 pm
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Bedrock of the Community
United States
10045 Posts |
Nice one Scooby! The doubling on PEDRO is great. |
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Valued Member
Colombia
86 Posts |
Check out the tripled wreath on this Colombian cent, Scooby. I have a few of these and am willing to trade you one for any LWC MM variety (i only have the 1956D-1MM-002). What do you say?   |
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Pillar of the Community
United States
4000 Posts |
Absolutely! I've got tons of RPM's! I'll hook you up with more than one.
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Valued Member
United States
365 Posts |
Great pics and all, I love this thread! One question: can someone reiterate how to tell the difference between doubled-die coins and (mere) Machine Doubling? I understand that machine-doubling is largely spurned by the collector coin market... SCS |
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Pillar of the Community
United States
4000 Posts |
Check out this beauty! DDO & DDR!  1874, and I'm really diggin' the 2-headed snake!    |
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Pillar of the Community
United States
4000 Posts |
SeriousCERES, they best way I know to describe it is, when then the die is doubled, that design gets transferred to EVERY SINGLE coin it mints, because the doubling is on the die itself. Machine Doubling is more like when the die bounces or shifts while minting the coin and "moves" the metal. I sometimes describe it as: Say you're a little itty bitty dude standing on the doubled letter (or number, or device) and you want to get down from it. Do you have a "step down" to get to the floor (field)? If you do, it is machine doubled. If you have to cross a "valley" and end back up at the same height you started, then you have a doubled die. Compare these two images with that thought in mind and see if you can tell the difference:   |
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Bedrock of the Community
United States
10045 Posts |
Scooby, so you got that Mexico 10c? Gotta admit, that's a cool DDO / DDR. I'm amazed it's doubled on both sides--that's not MD. |
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Pillar of the Community
United States
4000 Posts |
I know right!
Had to have it, especially when I seen the snake was doubled. It was all over at that point.
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Replies: 399 / Views: 80,228 |
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Posted 01/26/2011 3:47 pm
My latest acquisition:
