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 Replies: 3,662 / Views: 260,110 |
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Pillar of the Community
Russian Federation
5177 Posts |
Quote:
Just to be clear, we can accept any coin from anywhere as long as the common era date can be determined. IIRC, we even allow minting periods that go over the year boundary, as long as they are known to be a year long or less, and the majority of the period falls into the respective year. |
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Moderator
  United States
189603 Posts |
Yes. This become important when converting from calendars that do not completely overlap with the common era year. In that case, we go with were the majority overlap is.
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Moderator
United States
189603 Posts |
The fourth edition is closing in. Will it force the lock before 1487 is posted?  |
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Moderator
United States
189603 Posts |
Last chance! With the fourth edition down to the last few years this one will likely end next week. |
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Pillar of the Community
 United States
7962 Posts |
There are a couple of 1487 coins up for auction right now ...
Who knows?
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Pillar of the Community
United States
6514 Posts |
Dang. I saw this pop up and thought someone had one. Back to my popcorn. Check out my counterstamped Lincoln Cent collection: http://goccf.com/t/303507 |
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Pillar of the Community
United States
7962 Posts |
Quote:
According to numista, this coin can be dated by the silver content. I'm not sure how true that is, though. I should have been paying more attention earlier. I have one of these (Brabant Griffon, Philippe le Beau 1487-88). Which raises two questions: 1. Does anyone know if the XRF instruments that might be present in a coin shop can detect this kind of difference (about 5%)? 2. Who wants to take up the collection for me to go to my LCS to find out?    Edited by tdziemia
06/15/2018 3:15 pm
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Moderator
United States
189603 Posts |
So what you are saying is that XRF might be able remove the ambiguity and pin this coin down to a 1487 or a 1488?  Seems like a worthy investment. Who wants to take one for the team? |
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Pillar of the Community
United States
6514 Posts |
I'll chip in a fiver.  |
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Pillar of the Community
United States
7962 Posts |
Quote:
So what you are saying is that XRF might be able remove the ambiguity and pin this coin down to a 1487 or a 1488? That depends on (a) the accuracy of the XRF measurement, and (b) the validity of the info in Numista. I have good news and bad news. First the good news: you guys are off the hook for a contribution. My LCS provided the service for free (I think that was because they got to see a coin they'd never seen before). The other good news was that the XRF should be is accurate enough to tell the difference between a 50% silver coin and a 46% silver coin with a high degree of certainty. The bad news: the coin tested at 62% silver. Which doesn't fit the criteria for either year given in Numista, though it argues for 1487 more than 1488. So, now I'm curious about the source of the Numista information. |
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Moderator
United States
189603 Posts |
Now that is interesting. I suppose we will have to keep looking for a more accurate 1487.
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Pillar of the Community
United States
7962 Posts |
 Yep. |
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Moderator
United States
189603 Posts |
Last chance to push it back one more year. This topic will probably be locked after Wednesday. |
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Moderator
United States
34430 Posts |
I got nothin'.  "If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
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Pillar of the Community
United States
7962 Posts |
I tried to take one for the team. I placed a bid on a low grade 1487 Brabant double griffon in today's Kunker auction. (OK ... Brabant is a sweet spot of my collection, so it was also for me, not just the team). It sold for 450% of the estimate  SO, nope, I got nuthin' either. |
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Replies: 3,662 / Views: 260,110 |
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Posted 04/27/2018 09:39 am
