We use France's decision to suspend the free coinage of silver in 1876 as an historical quasiexperiment to examine the impact of a currency mismatch on sovereign default risk. This event played a paramount role in causing a large exogenous depreciation of the nominal exchange rates of all silver standard countries versus gold-backed currencies such as the British pound-the currency in which much of their debt was payable. Our identifying assumption is that France's decision to end bimetallism

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... s exogenous from the viewpoint of countries on the silver standard. To deal with heterogeneity we implement a difference in differences estimator. Sovereign yield spreads for countries on the silver standard increased in proportion to the potential currency mismatch. Yield spreads for silver countries increased ten to fifteen percent in the wake of the depreciation. Basic growth models suggest that the accompanying reduction in investment could have decreased output per capita by between one and four percent relative to the pre-shock trajectory. This also illustrates that a substantial proportion of the decrease in spreads gold standard countries identified in the "Good Housekeeping" literature could be attributable to the increase in exchange rate stability. Finally, if emerging markets are going to embrace international capital flows, the most export oriented countries will manage to mitigate the negative effects of a currency mismatch.