Did anyone made a metal test of the 1 cent 1989 - for the actual proportions in % of the coper and zinc in 1 cent 1989 or other cent in the range 1983 to 2000? Thank you. I will try do such test on Monday with a laser and would like to compare:)
Why test any coin when the specs are available on PCGS Coin Facts or other reference source? Obviously, there will be slight differences based on the mint's allowable tolerances.
Worry is the interest you pay on a debt you may not owe.
If you think slight metal variations are going to be worth a premium you are wasting your time. Online videos promoting minor mint "errors" and "varieties" have created the illusion of big money in this type of thing.
Did anyone made a metal test of the 1 cent 1989 - for the actual proportions in % of the coper and zinc in 1 cent 1989 or other cent in the range 1983 to 2000? Thank you. I will try do such test on Monday with a laser and would like to compare:)
The question is, what do you hope to accomplish?
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BUT THEY ARE NOT MIXED. You have a 100% Zn center with a 100% copper surface.
Even if you find the ratio to be off, all it would mean is that the copper layer was a little thicker or thinner.
And I can think of no way to determine this ratio without actually destroying the coin.
Hmmm...
If you could measure volume precisely enough, and had precise weight, calculated density should tell you ratio of cu to zinc. How could we get really precise volume of the coin? 3d laser scan, probably...
100th pint of blood donated 7/19/2022 . Transactions with WilliamF, Relaxn, LukeMarshal, jclovescoins, braddick, JWP, Weather11am, Fairlaneman, Dscoins, lordmarcovan, Collectorcoins, SurfinxHI, JimW. God so loved the world that he gave his only begotten son, that who so believeth in him should not perish but have everlasting life.
Did anyone made a metal test of the 1 cent 1989 - for the actual proportions in % of the coper and zinc in 1 cent 1989 or other cent in the range 1983 to 2000? Thank you. I will try do such test on Monday with a laser and would like to compare:)
Just weight them. Any mixture of any other amount of alloy will change its weight.
"I Prefer Dangerous Freedom Over Peaceful Slavery"
Thomas Jefferson!
BUT THEY ARE NOT MIXED. You have a 100% Zn center with a 100% copper surface.
Even if you find the ratio to be off, all it would mean is that the copper layer was a little thicker or thinner.
And I can think of no way to determine this ratio without actually destroying the coin.
Hmmm...
If you could measure volume precisely enough, and had precise weight, calculated density should tell you ratio of cu to zinc. How could we get really precise volume of the coin? 3d laser scan, probably...
I haven't used a pycnometer recently, but from my experience you need a pretty decent balance and both need to be treated carefully to get accurate results.
@TomB said:
I haven't used a pycnometer recently, but from my experience you need a pretty decent balance and both need to be treated carefully to get accurate results.
Toto2334
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I’ve never heard of a way to do metallurgical analysis with a laser.
Cents for the years you list are copper plating over zinc.
You can't do such a test with a laser. Any surface test is mostly just going to give you the composition of the copper layer and not the zinc core.
Unless you turn that laser way up then we can see right through it 😈
Just kidding 😎
🎶 shout shout, let it all out 🎶
Here we go....
Why test any coin when the specs are available on PCGS Coin Facts or other reference source? Obviously, there will be slight differences based on the mint's allowable tolerances.
Worry is the interest you pay on a debt you may not owe.
If you think slight metal variations are going to be worth a premium you are wasting your time. Online videos promoting minor mint "errors" and "varieties" have created the illusion of big money in this type of thing.
Just check your Redbook (If you have one, if not, get one) or the U.S. Mint specifications. Cheers, RickO
The question is, what do you hope to accomplish?
97 5% Zn and 2.5% Cu.
BUT THEY ARE NOT MIXED. You have a 100% Zn center with a 100% copper surface.
Even if you find the ratio to be off, all it would mean is that the copper layer was a little thicker or thinner.
And I can think of no way to determine this ratio without actually destroying the coin.
No idea why you need to do a test.
Wayne
Kennedys are my quest...
Hmmm...
If you could measure volume precisely enough, and had precise weight, calculated density should tell you ratio of cu to zinc. How could we get really precise volume of the coin? 3d laser scan, probably...
"When they can't find anything wrong with you, they create it!"
Just weight them. Any mixture of any other amount of alloy will change its weight.
"I Prefer Dangerous Freedom Over Peaceful Slavery"
Thomas Jefferson!
No try it I want to see what happens.🤯
Hoard the keys.
Pychnometer
I haven't used a pycnometer recently, but from my experience you need a pretty decent balance and both need to be treated carefully to get accurate results.
In honor of the memory of Cpl. Michael E. Thompson
I don't think it would help.