Mexico, San Luis Potosi District Covers, four folded letters; Charcas (YB SL58), 2R rate, 28 March 1854, Espirito Santo (YB SL66), 3r rate, complete letter to Antonio Escandon, 19 September 1854, Villa de Matehuala (YB SL96 - red), 3r rate, complete dated letter, 22 August 1844, Matehuala (YB SL98), 3r rate in blue, 15 July 1852, full letter, Escandon correspondence., Very Fine. Estimate  $300 - 400. $0 (Image)