Guadalajara, 1867, 1r Black on Blue Thin Oblong Quadrille, Horizontal Pair, canceled by oval Guadalajara handstamp which leaves impression on reverse of lettersheet effectively tying pair on folded letter sheet to Zapotlan; cover missing sideflaps, F.-V.F.; with 2012 MEPSI certificate with no opinion to whether pair originated on cover. Scott No. 35  Estimate $150 - 200. $0 (Image)