In the CFA Franc zone of sub-Saharan Africa, the collective devaluation in 1994 remains the most important incident in its history. It sought to put an end to the worsening overall macroeconomic position of the zone. Using seemingly unrelated regression equations (SURE) analysis, this paper estimates the real e¤ective exchange rate and degree of misalignment in 12 Franc zone countries over the period 1960-99, allowing for contemporaneous error covariance due to observed cross-sectional dependence. The evidence suggests some signi…cant di¤erences among member states, however the largest economies -Cameroon, Côte d'Ivoire and Senegal -showed some striking similarities: just prior to the devaluation, they were much more overvalued relative to the smaller member states, most of which were either only marginally misaligned or virtually in equilibrium. In 1994, only Côte d'Ivoire is exactly in equilibrium as a result of the devaluation. Analysis of the post-1994 period suggests that some challenges lie ahead for the Franc zone, if …xed parity is to be maintained.