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Message:: [QUOTE="Conder101, post: 241240, member: 66"]You see the "sandwich" because it is a clad composition.  There are other countries that use clad compositions as well and when they do you can see the layers on them as well.  Germany with their copper clad iron issues comes to mind.  And Panana does, or at least did at one time because we struck their coins for them and used the same planchets that we used for our coins.  (Panama Balboa = US dollar)  But many coins that are made of copper and nickel are made from a homogenous mixed alloy of the two metals like our five cent piece.  In that case you see only the one solid color.  There are also cases where the coins are one metal that has been plated by another metal.  In a few cases the strip was plated and the coins will show this by having a different color metal on the edges than on the faces, or the planchets my be plated after they are cut from the strip in which case the entire surface of the coin will have a single appearance, as in our copper plated zinc cents or Canada's new nickel plated steel coins.[/QUOTE]