Sierra Leone Issues Dollar Coin

British Sierra Leone Company issued a silver dollar coin in 1791, three years prior to United States issuing a silver dollar. Continue reading

Leonardo da Vinci

Leonardo di ser Piero da Vinci (Italian: [leoˈnardo di ˌsɛr ˈpjɛːro da (v)ˈvintʃi] ( listen); 15 April 1452 – 2 May 1519), more commonly Leonardo da Vinci or simply Leonardo, was an Italian polymath whose areas of interest included invention, painting, sculpting, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography. Continue reading

Milled money… Automation of a coin press

In Italy circa 1500, Leonardo da Vinci invented a Mill-driven coin press. Continue reading