Mexico, 49-68 Cuautitlan, 09/09/68 Mexico certificado box (Schatzkes 837A) on white paper only used on Mexico sub office shipments, negative Cuautitlan Administration receiver on reverse, 1st of 15 Cuautitlan consignments (small quantities were contained in each consignment), this contained Thin Figures 6c (200), 12c (300), 25c (100), 50c (30) and 100c (12), Very Fine. Estimate  $250 - 350. $0 (Image)