Can anyone tell me if this coin is missing it's clad layer? It weighs about 11.30grams and looks to be thinner than normal. Thanks.
For my education can someone tell me how the layers are actually layered? I know there is a copper core but what surrounds it from there in each stage? Also, if it is plated shouldn't it weigh more?
The inner core is pure copper, the clad layer is 25% nickel, 75% copper. The nominal weight is 11.34 grams with tolerance of +/- 0.454 grams.
Thank you desertgem. I am having trouble understanding why this coin shows a little bit of nickel but mostly copper. Can you explain this to me? Sorry for my ignorance.
You start with three ingots of metal, two of coppernickel and one of copper. Originally the ingots were bonded together explosively. They would literaly place explosives around the stack of ingots and set them off so the force of the explosion would bond them together. The ingots would then be rolled out into coining strip and planchets punched from it. Today one side of each of the coppernickel ingots and both sides of the copper ingot are ground very smooth and are cleaned and wire brushed to make sure the surfaces are completely clean and free from oxides. The ingots are stacked and then rolled under a very high pressure in order to bond the ingots together, and then the ingots are rolled into strip. By the way, not missing a clad layer. Weight is too high.
