| Author |
 Replies: 51 / Views: 5,329 |
|
|
|
Pillar of the Community
Australia
7096 Posts |
I am thinking that only the obverse has been sandblasted at some stage, That would account for the missing 0.2g.
|
|
Pillar of the Community
United States
3644 Posts |
It's an '83 supposed be 2.5 I could see possibly 2.7 but 2.9?  Edited by Slamnbass
01/24/2017 1:09 pm
|
|
Pillar of the Community
United States
5964 Posts |
My best guess is somethings been added to the obverse.
|
|
Pillar of the Community
Canada
1747 Posts |
|
|
Pillar of the Community
Canada
891 Posts |
This coin has a similar appearance, it is a Norwegian 5 ore bronze  |
|
Pillar of the Community
 United States
3463 Posts |
Interesting, I will have to check that out.
|
|
Pillar of the Community
United States
4809 Posts |
|
|
Pillar of the Community
United States
3463 Posts |
I'm not 100% sure what it is yet.
|
|
Pillar of the Community
United States
4809 Posts |
I've really only seen the type of 'patina' you have there on your specimen on copper coins; not zincolns. I know folks search their 1983 LMCs for the rare copper variety. The weight is closer to a copper planchet...the look too. That would really be something, Claude. I'm staying tuned in on this thread. It would be wonderful if this were the 'chicken dinner'!
|
|
Pillar of the Community
United States
5964 Posts |
But the reverse looks like a Zincoln. Maybe it would be a good idea to put a small scrape on the back and see?
|
|
Pillar of the Community
Canada
891 Posts |
I believe SPP-Ottawa can tell you exactly what that coin contains.
|
|
Pillar of the Community
United States
3463 Posts |
Quote:
Maybe it would be a good idea to put a small scrape on the back and see? I have to disagree with recommending someone sanding or scraping a coin. If a coin were a rarity of any value, the scrapping and sanding would ruin the coin and the value of it. I have studied this coin for some time now, I'm still not 100% sure exactly what it is or what caused the surface to look like it does on one side only. It is not a common Zinc cent, but it may not be Copper either. The other coin I mentioned seeing this type of surface on was the 1983-D Brass cent NGC certified. The NGC label says it is 98% Copper and 2% Zinc and weighs 3.0g. It only shows this surface on one side of that coin also. A Zinc cent is 97.5% Zinc and 2.5% Copper and weighs 2.5g, and a pre-1982 planchet is 95% Copper and 5% Zinc and weighs 3.11g. So the NGC coin can't be either one of those planchets. That coin is currently listed for sale on ebay. The seller claims it is a transitional error, but with that alloy mix, it can't be. Here is that coin on NGC's website: https://www.NGCcoin.com/certlookup/2603683-001/Ken Potter recently wrote an article on it for Numismatic News that can be found here: http://www.numismaticnews.net/artic...cent-mysteryA 1983 transitional cent has a potential value of around $15.000.00 while a 1983 cent struck on a foreign planchet has a value of less than half of that. There are other possibilities, but I still have some research to do before I can know exactly what it is. It has been a learning experience for me so far, and I think we can all learn something from this, that is why I am sharing what I find. Edited by cwb
01/24/2017 10:14 pm
|
|
Bedrock of the Community
 United States
12477 Posts |
Very exciting! In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
|
|
Pillar of the Community
United States
5964 Posts |
Quote:
I have to disagree with recommending someone sanding or scraping a coin I didn't recommend anything Cwb. I asked a question. I wouldn't have even asked it, if I'd had the information in your last reply. My opinion of what it might be has changed as new information was made available, starting with the date. I now think it's probably a brass cent. Good luck to you. Edited by CoinMasters
01/25/2017 12:19 am
|
|
Moderator
 Canada
10460 Posts |
An XRF might provide some insight. The surface texture could be a function of what stage the die life is at... but the weight difference, that is well beyond what I would suspect mint tolerances to be.
I have an XRF in my lab at work - if you pay the postage, I can test it for free. That said, my XRF is currently back at the manufacturer, getting a software and hardware upgrade... I should have it back in March. Try sending me a PM in a month or so...
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
|
| |
Replies: 51 / Views: 5,329 |
First Page
Posted 01/24/2017 1:08 pm
