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 Replies: 42 / Views: 2,442 |
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Pillar of the Community
 Canada
5591 Posts |
I still say that you should find a different XRF, maybe a University or school, that isn't set-up for Au & Ag primarily. There is someone on this site who has access to one and maybe he will chime in. If not, just call around for a pro model, so you know that you are chasing the real thing.
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Pillar of the Community
Canada
5324 Posts |
The other way to test the accuratcy of the XRF machine is to take a 1947 penny and asked them nicely to zap it, if it falls in the range of a normal copper 47 penny you have your answer. Almost sure this 7 to 10 K machine is accurate, in close to 40 years of collecting errors have never seen a 1947 off metal strike, this is assuming this coin looks like a shiny nickel. In the right major auction like RCNA or FUN Heritage. probably at least 1000.00 or much more but this means a PCGS slabbing, Sean Isaac of Alliance Coins outside of Ottawa is a PCGS dealer in your neck of the woods and really cool to deal with. Edited by john100
03/30/2024 12:39 pm
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Pillar of the Community
Canada
5324 Posts |
For really cool coins you must choose a major auction and not their regular monthly auctions simply there is more eyeballs on the major events as mentioned. PCGS I assume is using a 100 K XRF a more powerful machine, although if you watch the Oak Island treasure show they are using some high end XRF used by museum or university, good luck !
Edited by john100
03/30/2024 09:23 am
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Pillar of the Community
Canada
1622 Posts |
I also think its plated.
What are the odds that the token, or whatever foreign planchet was used, was exactly the same diameter and weight as a 47 cent?
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New Member
 Canada
22 Posts |
Thanks all - I did actually ask the XRF owners to humour me and zapped a 1947 penny, a 1989 nickel, a dime, and two of my 1859 pennies (because why not). That's where my original variation estimate came from as far as stats/percentage variations of the machine being used. It is absolutely odd that it is the same weight and dimensions as a normal penny which is why I wanted to see if I could find "the" potential token that the mint was making in that timeframe that it may have been accidentally made with. Otherwise my only thought was a possible non-circulation experiment run in Canada as 1947 was the year that Britain changed over their small silver denominations (six pence for eg) to copper-nickel alloys.
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Pillar of the Community
Canada
1984 Posts |
You never know.......   PS this one is mine. April 2010 CN Journal. Edited by Smallcentguy
03/30/2024 10:58 am
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New Member
Canada
22 Posts |
Yes!!!!! Haha and there it is! Where/how did you come across it?
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Pillar of the Community
Canada
1984 Posts |
Mine came from an old family collection.
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Pillar of the Community
Canada
5324 Posts |
Thermo Fisher is a 40 billion a year NYSE listed company their measurement machines are top notched, back in the old days collectors would make nasty scratches to see if it is plated as this is what seems to happen to this coin. Info from other collectors here have gotten your answer, as other have tried the RCM rarely is helpfull in these inquieres, probably an internal RCM test, another example of a off metal strike Edited by john100
03/30/2024 12:41 pm
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Pillar of the Community
Canada
5591 Posts |
Both Henry (the author) and Roger (the XRF man) are friends of mine, and he was the one who XRF'd the almost 1000 1859 large cents for the 3 of us working together for the CN Journal. Lena, what did your newest XRF show as far as percentages? Is the mystery solved?
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New Member
Canada
22 Posts |
I think it is! I had two readings taken which ranged a bit but came out to about 65 Cu, 30-33 Ni and then the rest tin/zinc.
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Pillar of the Community
Canada
5591 Posts |
Do you mean just the coin that you started this thread on, or ALL of the cents and nickels?
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New Member
Canada
22 Posts |
Lol, just the original coin. Each coin came out to what it should be +- a percent or two.
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Pillar of the Community
Canada
1984 Posts |
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New Member
Canada
22 Posts |
Thank you for sharing and to everyone for all the info! I plan on sending it to Sean this week for a PGCS slab!
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Posted 03/30/2024 09:09 am
