INDOCHINA. Ce.54. 1891 (July 15). Cover to FRANCE franked by 1881 Dubois 25c. black on rose tied by BAC-NINH/TONKIN cds in black with repeated strike at right. Blue circular cachet at left TIRAILLEURS TONKINOIS-3e. REGIMENT and Modane-Paris cds (Aug. 22) also on front in red. (Image1)