Gresham's law, a monetary principle stating that "bad money drives out good", was formulated in which century?

Maestra, England had a guinea coin, made of gold (good money). Paper money (bad money, fiduciary money), pounds (1£+1s = 1 guinea) . Took its place. Normally, they use the same currency with different coins, paper. So the US used to have a silver dollar, which was replaced a coin not of silver and then paper. ie currency with low natural value (paper) will push out, of circulation, high value money (gold, silver).

¿Qué?