| Author |
Replies: 35 / Views: 10,792 |
Page 3 of 3
|
|
|
|
Pillar of the Community
United States
2775 Posts |
Quote: Ill check a different jeweler tomorrow and post the results Seems like more work. but may satisfy some. Thanks, Doug.
|
|
Moderator
 United States
15471 Posts |
I'd enjoy hearing the result of a second alloy check. 
Take a look at my other hobby ... http://www.jk-dk.art
|
|
Pillar of the Community
 United States
6548 Posts |
Silvio, your equations are of course correct. There are two separate things here. 1. I read a prior CCF post that said the specific gravity of an ordinary nickel is 8.92, and a War Nickel is 9.25. I didn't actually fact check that statement, I just accepted it as probably correct. http://goccf.com/t/367674#31554952. My setup was quick and dirty. Pipe temperature tap water in a shot glass on a pocket scale. But if the alloys were a considerably different density, there should have been a repeatable difference regardless of container, scale, medium. If the 8.92 vs. 9.25 number is accurate (and I don't know that it is, but it seems reasonable), then you would need a legitimately precise setup to detect the difference. That imprecision is probably way within the accuracy tolerance of a $10 pocket scale.
|
|
Pillar of the Community
United States
2282 Posts |
For what it's worth, this nickel does not come close to passing the eye test for silver composition.
You realize when you know how to think, it empowers you far beyond those who know only what to think.
-Neil deGrasse Tyson
|
|
Pillar of the Community
United States
3207 Posts |
NumismaticsFTW, I'm with you and datadragon, I have plenty of worn 1946 nickels that look just like the OP's, and it's unlikely they were all struck on wartime planchets
|
|
Pillar of the Community
United States
1648 Posts |
Quote: NumismaticsFTW, I'm with you and datadragon, I have plenty of worn 1946 nickels that look just like the OP's, and it's unlikely they were all struck on wartime planchets Yes, there are 1946 nickels struck in error on obsolete wartime silver blanks. These are quite rare however as only a few pieces (4 +) have been authenticated I believe looking quickly. This error was caused by the same event that caused the 1943 copper cent or the 1944 steel cent. That is, the coin was struck on blanks left over from the previous year so consider its not something that you will generally find. But its not a unicorn at least and so you can at minimum send to cheaper anacs, or if you have a NGC/PCGS account its certainly worthwhile for the payoff if you believe it to be the case. If you happen to have access to XRF as mentioned without spending the same amount for grading thats fine as you dont want to use destructive methods. Good luck to you and nick10. Most just dont even know about these and maybe there are more out there if people are looking.
|
|
New Member
 United States
35 Posts |
So I got a guy to use his gun on it and its not silver at all. I decided to go to the first jewelry store and have them retest it for me out of curiosity and this time I watched. They rubbed it on a sharpening stone (it looked like) and dropped acid on the dust then came back and told me again....Yep theres definitely silver in it. I was shocked and just said thank you and walked away
|
|
Pillar of the Community
United States
2775 Posts |
 Thanks, Doug.
|
|
Moderator
 United States
97083 Posts |
Hmm. could there have been a trace of silver on the sharpening stone?  
|
|
Pillar of the Community
United States
1648 Posts |
Quote: So I got a guy to use his gun on it and its not silver at all. I decided to go to the first jewelry store and have them retest it for me out of curiosity and this time I watched. They rubbed it on a sharpening stone (it looked like) and dropped acid on the dust then came back and told me again....Yep theres definitely silver in it. I was shocked and just said thank you and walked away Thanks for the update which is not conclusive although the XRF is generally known to be accurate if calibrated properly. In the future I would refrain from ever using forms of destructive testing again as this can greatly lower the value of the coin. It works ok for bullion gold/silver and things like jewelry/chains but not good for coins that will be evaluated on its condition. The coin graders do not use destructive testing. I would still submit to check it since the other test came out with silver.
Edited by datadragon 08/11/2023 10:55 pm
|
|
Pillar of the Community
Canada
6244 Posts |
YES, they do the goldsmith traditional test. This it is performed on Mississippi stone (black) and compare with specific testing silver. They will do same lines on stone then they will apply specific acid for silver testing. This test it is the most accurate test. The cyanide acid is special for silver alloys and tell exact the purity. XRF it is accurate if the XRF it is calibrate properly for the metals, if not will be Holocausts. XRF's are good with adequate software and calibrations (each year or every 500 tests) Technology.
I will submit to PCGS this coin. For me the test it is enough. At 56% Ag the goldsmith will tell you that he see silver here and if you want to melt will be at 500 Ag. This it is the rules. Ex: You has 900Ag, they take at 850 Ag.
Edited by silviosi 08/12/2023 01:17 am
|
|
New Member
 United States
35 Posts |
Im going to assume there were silver flakes on it already but it is odd that it showed up twice. I didnt know that was the method they used until they began the second time. Considering the gun already gave the answer I didnt care....Is the gun ever wrong?
|
|
Pillar of the Community
Canada
6244 Posts |
The guns as you say yes could be wrong if they do not have proper software and setup. The technology it is very accurate but you the user must know where will go for. Ex: If you has an XRF programed for metallic rocks, the coins will be out of the accuracy.
|
|
Pillar of the Community
United States
3207 Posts |
as controls, during a given testing session one could also test a known standard alloy and known wartime nickel to see which the uncertain nickel matches most closely
|
|
Moderator
 United States
189199 Posts |
 to the Community!
|
|
Page 3 of 3
|
Replies: 35 / Views: 10,792 |
Page 3 of 3
|