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<p>[QUOTE=&quot;Spark1951, post: 8168775, member: 90692&quot;]The US Mint found out in 1943 how horrible zinc was for coins, otherwise there would have been more than 1 year of zinc-plated steel cents.&nbsp; America, and other countries, experimented with zinc, aluminum and many other blended alloys over the years and if copper and nickel hadn’t become critical weapons metals in WW2 the zinc over steel coin never would have happened.</p><p><br /></p><p>My own theory on American Zincolns relates to temperature.&nbsp; Zinc the metal is brittle at room temperature (Wikipedia) and the contractors had to work hard to get 8 microns of copper in place.&nbsp; My experience with Zincolns, especially the first 8 years, was the granular, pebbled look meant the copper temperature was not always correct.&nbsp; I’ll be the first to proclaim I am not an expert on how these durn things get manufactured but I have learned a thing or two over the last 60 years when I first began collecting.</p><p><br /></p><p>My beef with Zincolns is that the Mint forgot the lessons of the past and are now doomed to repeat them.&nbsp; IMO…Spark[/QUOTE]</p><p><br /></p>

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