This is the recording of María José Orraca's presentation and discussion on Tumin, Pesos or Wealth? Limits and Possibilities of a Local Alternative to Scarcity of Money and Abundance of Richness (A Case study in Mexico), at the UN-NGLS breakout session on "SSE, Time and Mutual Credit Currencies—Changing Values, Changing Impacts?" during UNRISD's "Potential and Limits of Social and Solidarity Economy" conference, which was held May 6-8, 2013 in Geneva, Switzerland. [19 minutes]