Eisonhower Dollar?!?!?!

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well guys, i wonder if my local dealer could help for i am an amature, and ill start the bidding at $500 k

I have noticed on some worn parts, a little silver shows, maybe plated

btw, brand new scale and it was electronic

 

Hmmm well still maintain faith it is pure gold!!

 

is there any pure gold coin i could compare weights too? or is there another way to find this out? this is very mind-boggling to me HELP PLEASE!!!!!!!!!

 

well heres the thing,
I measures on a balance scale. reading what i told u
then my teacher let me use the one i told u about and it read like .01 off
so the weight is correct

 

im soo confused here

 

Use the scale to measure a known value, such as a quarter. That result should tell you if the scale is reading correctly.

 

well, before i put the "golden" eisonhower on, i had a regular on there just because my friend put it on there. (22.6)

this is very hard
what is a man to do?

 

My Red Book states that the 1971-1978 Ike dollars weighs 22.59 grams, except for the 1976 coin. The '76 weighs 24.59 grams in the silver issue, and 22.68 grams in clad.

So I'd guess your scale is correct unless your "regular" Ike was a '76..

 

it was a 78 ike for the regular one. is there a test i could use to see it like the center is gold or am i just loosing it over this?

 

Ask your science teacher for help in checking the specific gravity of the coin. I don't have the info handy, but he/she should have a reference book giving the specific gravity for various metals, or maybe someone else can post the s/g for gold.

The measurements involve weighing the item in a beaker of water and by itself, but since my high school physics course shortly followed discovery of the atomic bomb, and I haven't used the information since, I just can't recall the details.

Unfortunately, the only way to be 100% certain of the composition requires destructive testing, starting with either cutting the coin in half, or cutting a piece out of it.

 

As Doug suggested, I would think you could look up the weight and dimensions of another gold coin, such as a one-ounce Gold Eagle. If you see that the Gold Eagle has smaller dimensions than your Ike but has greater weight than your Ike, then you can be sure that your coin is not solid gold; otherwise, since it is bigger, it should weigh more than the Eagle.

I don’t have my Red Book in front of me, but I’m sure an AGE is smaller than an Ike. The weight for an AGE must be 1 oz Troy x 24/22 (22 carat gold) = 1.09 oz Troy = 33.9 grams. Since your coin only weighs 31.8 grams, and it is bigger than an AGE, it can’t be solid gold.

As Roy suggested, a specific-gravity test should also be pretty conclusive, unless someone went to the trouble of making a coin with just enough metal heavier than gold (uranium ?) and just enough metal lighter than gold to make the same coin volume equal to a gold coin in weight; pretty unlikely, unless you have evidence of someone actually trying to sell gold Ikes.

 

i am on spring break now, and anyways i have no idea what a gravity test would do or what it is. Basically we have:
A-fake coin
B-mixed components
C-an unknown coin

 

Without knowing the exact specific gravity nor density of the metal alloy(s) in the Ike, from the above table, both copper and nickel are reasonably close to half of the density of gold. So if the "golden" Ike were truly gold, its weight should be very close to the weight of two regular Ikes.

 

basically we are at that it is a fake coin correct?

 

If it were solid gold, my approximation is that it should weigh about 49 grams. It is hard to say on this one without coin in hand, as it does look authentic as far as I can tell from the pics. But if your weight is correct, I would be highly suspicious of its authenticity.

 

That's go back to the big possibility that it is not some plated junk or a counterfeit but may be an official issue made 27 years ago by a very high ranking mint official after hours!! Could be worth a cool million or even two!