silver clad proof vs silver proof

holeinone1972

Can I tell the difference raw from just looking at the edge and seeing the copper core?

I have a raw 72-s Ike proof to sell but I am not sure how to know the difference.

Is it that obvious, just look at the edge?

Rob

19Lyds

Yes, the copper-nickel clad proof should have a bright coppery edge since the core is 100% copper.

The 40% Silver Clad proof's edge will not show any copper since the core is a 21% nickel/79% copper core alloy.

Edited to correct the alloy content and percentages.

holeinone1972

So none of the Ike's are 90 % silver?

19Lyds

None.

All silver IKE's are 40% Silver clad consisting of 80% Silver/20% Other metal cladding with a 79% copper/21% nickel core alloy.
There are no 90% Silver Eisenhower Dollars.

This information was taken from this Coinfacts webpage and it kinda makes me wonder what those "other" metals really are?

edix2001

... except for the Ike commem dollar coin.

19Lyds

<< <i>... except for the Ike commem dollar coin. >>



That is a commemorative dollar and not considered in the Eisenhower Series any more than the Buffalo Commemorative Dollar is considered in the Buffalo Nickel Series.

ProofArtworkonCircs

Lee, the other metal in the core is silver. To get an over all 40% silver, you need more silver than what is in that 80% silver cladding.

According to the red book, the core is .209 Silver and .791 copper. This is the same as the other 40% silver coins.

A little known fact is that the 40% dollar is heavier than two 40% silver halves. A silver dollar is about 7% heavier than 2 silver halves of like composition be they 90 % or 40% specimens. The weight of two copper-nickel clad halves equals that of one copper-nickel clad dollar.