Mexico, (French Post Office) 1863 French Expeditionary Force, Bureau F cds, light strike with lozenge "CEMF" tying France 1853-60, 10c bister + 20c blue, two singles on cover to Strausbourg, France paying the officer's rate; one 20c has small wrinkle, F.-V.F., higher lettered bureaus are much scarcer; with 1982 MEPSI certificate. Estimate  $500 - 750. $0 (Image)