The Big Problem of Small Change offers the first credible and analytically sound explanation of how a problem that dogged monetary authorities for hundreds of years was finally solved. Two leading economists, Thomas Sargent and François Velde, examine the evolution of Western European economies...

Herein, I review Peter Temin's book, "The Roman Market Economy", and take the occasion to alert economists to the exciting work that is being done and could be done in the economic history of the ancient world. (JEL C80, N01, N13, N73)

What are the conditions under which Gresham's Law holds? And what are the mechanics of a debasement? To analyze these questions, we develop a model of commodity money with light and heavy coins, imperfect information, and prices determined via bilateral bargaining. There are equilibria with...