Where can I find reliable information and resources about the history and composition of US coinage?

Mar 24, 2008 ... Several years ago, Walter Luhrman, a metallurgist in southern Ohio, discovered a copper deposit of tantalizing richness. Dec 10, 2012 ... Sculptural Cubes Made from Thousands of Pennies by Robert Wechsler ... The medium of choice for artist Robert Wechsler is U.S. pennies, tens of ... The artisan's touch makes it lovely and soft by lightly hammering its surface. A layer of grease revives it, bringing out its natural characteristics. This is ... Jan 1, 2016 ... If the pennies are guaranteed to make electrical contact with each other, no static charge will build up. However, the pennies will probably be ... Feb 16, 2025 ... The good news, for those who dislike the penny, is that the coin is disappearing on its own. The U.S. Mint has made about 5 billion pennies ... Apr 11, 2024 ... In 1943, the US Mint made a significant departure from the traditional copper penny due to the critical need for copper in World War II efforts. May 22, 2024 ... Pennies are made of zinc coated with copper. Copper has a work function of 4.7 eV. The ozone layer blocks nearly all solar radiation with ... Many pennies are made of an alloy of copper and zinc which is bronze. A typical alloy has a ratio of 95% copper and 5% tin and zinc, or just zinc. Jun 21, 2016 ... What's a Penny Made Of? · From 1837 to 1857, the cent was made of bronze (95 percent copper, and five percent tin and zinc). · From 1857, the ... In the past, pennies were made of 100% copper and even steel, but pennies made in 1982 and later are copper-plated zinc. There also have been pennies ...