1972 Eisenhower Dollar Question...?

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Author	Replies: 7 / Views: 2,247
wert Rest in Peace 1988 Posts	Posted 05/14/2012 8:48 pm Hi guys Just a quick question and sorry it is a stupid question, but here goes. How come 1/3 of the edge of this coin looks like silver and 2/3 looks like copper...?...See pics below. Edited by wert 05/15/2012 4:16 pm Report this Post to the Staff

papatony Pillar of the Community United States 808 Posts	Posted 05/14/2012 9:05 pm The coin is a Clad coin. Copper and nickel sandwiched. Report this Post to the Staff
wert Rest in Peace 1988 Posts	Posted 05/14/2012 9:07 pm Thanks papatony Them I assume that is normal...? Report this Post to the Staff
papatony Pillar of the Community United States 808 Posts	Posted 05/14/2012 9:09 pm Oh sorry...yes its normal.. Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 05/15/2012 2:07 pm It is caused by a "smearing" of the metal during the punching out of the blank. The strip has the upper and lower layers of coppernickel the same thickness, but when the punch goes through the strip on the edge of the hole it "smears" the upper layer down over part of the copper and the copper down over the lower copperrnickel layer. On the edge of the blank the "smearing" goes in the opposite direction and the copper covers the upper layer of copper nickel. In any case the result is an edge that shows two of the three layers clearly and little if any of the third layer. (It is also another way of helping to verify genuine incomplete planchets on clad coins. The smearing on the "clipped" area will always be in the opposite direction than that of the edge of the coin.) Report this Post to the Staff
CaptainFwiffo Pillar of the Community United States 4132 Posts	Posted 05/15/2012 2:31 pm The composition of US dimes, quarters, half dollars, Eisenhower dollars and Susan B. Anthony dollars is clad like this (the center is copper and the outer layers are cupronickel, 75% copper, 25% nickel). Net composition is 91.67% Cu, 8.33% Ni. Special collector versions of Ikes and Half dollars from '65-'70 are a clad composition, but are 40% net silver. '64 and older are 90% silver. Edited by CaptainFwiffo 05/15/2012 2:32 pm Report this Post to the Staff
wert Rest in Peace 1988 Posts	Posted 05/15/2012 4:18 pm Thanks guys for that info...learning... Report this Post to the Staff
Domain555 Pillar of the Community United States 1804 Posts	Posted 02/05/2014 4:17 pm May I please throw in my thoughts? Normal. Some are 100% copper Others, small amount of nickel. Report this Post to the Staff
	Replies: 7 / Views: 2,247

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