Lot
2171 
Mexico, 1891 Puebla U.P.U. certified mail receipt. Postal form "F. Num. 276" franked with 1890, 5c dull blue (additional row of vertical perforations at right) tied by blue "Puebla, Ene 15, 91" oval date stamp, previously attached to cover to Bilboa, Spain, with appropriate transit and receiving postmarks on reverse; light tone spots, Very Fine, a very rare U.P.U. postal receipt. Scott No. 216a Estimate $300 - 400.
Realized: $170