Before There was Gresham's Law...
Gresham's Law says that bad money pushes out the good but before it was known as Gresham's Law, it was called Copernicus' Law. Nicolaus Copernicus is born this year. Most people will know him as an astronomer and theorist who proved that the Earth orbits the Sun and not the other way around, but he will offer that theory near the end of his life. Long before that time he will become an expert in religious law, speak fluently in several languages, work as a physician, and as an economist. He will formalize several economic theories that will be improved upon over the centuries. Aside from Gersham's Law, he will derive the "Quantity Theory of Money" that most economists agree is true in the long run that the quantity of currency and the average velocity of currency will influence the price of goods though it won't entirely determine the price.   
The Canon of Medicine in Print
As the Gutenberg printing press spreads across Europe there will be many "firsts" in printing. This year, the Canon of Medicine will be set in print. It was originally written in Arabic by Avicenna, a Persian philosopher of the 11th century. His book was translated into Latin and this is the version printed this year. It will remain in use well into the 17th century. 
This Year in Wikipedia
Year 1473, Wikipedia.
- Dollar coin (United States) - Wikipedia (2014). Retrieved on 21 November 2014.
- Nicolaus Copernicus - Wikipedia (2014). Retrieved on 21 November 2014.
- Gresham's law - Wikipedia (2014). Retrieved on 21 November 2014.
- Gordon, John Steele. An Empire of Wealth: the Epic History of American Economic Power. HarperCollins, 46-47. ISBN 0060093625. “"The Massachusetts government [beginning in 1690], issuing more and more paper money, soon drove gold and silver coins out of circulation, owing to the operation of Gresham's law (“Bad money drives out good”). People passed the paper money but kept the specie in the mattress because they regarded it as a superior store of value, which it was."”
- The Canon of Medicine - Wikipedia (2014). Retrieved on 21 November 2014.
- Judah the Prince - Wikipedia (2014). Retrieved on 24 November 2014.