1971 1c coin

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lincolnjoe
Posts: 2
Joined: Thu Apr 18, 2019 7:11 pm

1971 1c coin

Post by lincolnjoe » Sun Mar 08, 2020 2:05 pm

need some help with this one, is it mechanical doubling or die wear? thanks for lo
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oking

troubadour
Posts: 217
Joined: Thu Nov 24, 2016 3:46 pm

Re: 1971 1c coin

Post by troubadour » Sun Mar 08, 2020 2:40 pm

machine doubling. here's a picture to help you.
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lincolnjoe
Posts: 2
Joined: Thu Apr 18, 2019 7:11 pm

Re: 1971 1c coin

Post by lincolnjoe » Sun Mar 08, 2020 7:38 pm

thanks that's what I thought, anyway happy hunting everyone

Bill in Burl
Posts: 694
Joined: Thu Sep 04, 2008 7:41 am
Location: Golden Horseshoe, ONT

Re: 1971 1c coin

Post by Bill in Burl » Mon Mar 09, 2020 4:49 am

What a great visual aid, troubadour! Even though they are an error, rather than a variety, I've always been drawn to MD Vicky cents with nice offsets. Hub-doublings come from a working die that had 1 or 2 of the pressings needed to fully impress the design into the working die a little off kilter, so that every coin struck from that working die will show the same offsets/anomalies.

Machine or mechanical doubling takes place in the nanosecond just after the working die strikes the planchet. As the die is just coming off or rising from the planchet, it will move slightly in any direction because one of the keepers/screws has come loose. If not noticed and retightened, the die can become looser and looser, resulting in more and more offset in the coin striking and affecting more and more of the design. MD will affect only as many coins as it took to notice the malady and to retighten the keepers. This may be from a few hundred coins to more than a few thousand .. or even the whole time of that striking session if quality control doesn't take notice. Most MD's are infinitely scarcer than a variety would be because it is in effect a much shorter time than the life of an actual die would be.
Bill in Burl

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