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<p>[QUOTE=&quot;muhfff, post: 2741222, member: 71559&quot;]The first Estonian coins which was made in Estonia (since 1924) were made using ammo casings left over from WW1 and Independence War (and yes, the empty shells were collected after battles). Basically, pure nickel was added to the casings and the end result supposed to be 10% nickel, 70% copper and 20% zinc. Usually it was that way, but not always. The casings had different alloys because of different origins (Russian, English and Japanese ammo was used). Because of that the amount of copper and zinc was not the same all the time. For example, in one metallurgical analysis the copper amount in the end result was 66% copper and 24% zinc instead of 70 and 30. Also, there was always traces of lead and iron.</p><p><br /></p><p>Anyway, if You calculate a bit, then the casings had to be roughly 73-77% copper and 23-27% zinc. I don&#039;t know, what is the exact alloy of US ammo casings (or even if there is any standard for that), but some extra copper was probably needed (or some zinc had to be removed) to make them to cents.[/QUOTE]</p><p><br /></p>

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