Mexico, 1851 Mexico City To Santander, Spain, folded letter datelined from Mexico and carried outside the mails to France, entered the mails with "Paris, 11 Sep, 51" cds, blue "8" rate handstamp overstamped with large "10" and "Rs." handstamps, partial receiving backstamp, Very Fine. Estimate  $300 - 400. $0 (Image)

Mexico, 1851 Mexico City To Santander, Spain, folded letter datelined from Mexico and carried outside the mails to France, entered the mails with "Paris, 10 Dec, 51" cds, "2 Rs." handstamp, partial receiving backstamp, Very Fine. Estimate  $150 - 200. $0 (Image)