Mexico, 1834-52 "Sello Negro" Covers. 19 covers; with towns including Cadereyta Jimenez (Schatzkes 867A+868A), Tepic (408), Tula, Leon (500+500A), Dolores Hidalgo (1300), red Celaya, Alvarado, Apazingo, Chalchihuites (1861A) with unrecorded "Franco", red and black Aguascalientes (11A, 11), Catorce (1469), etc.; clear full strikes throughout, few cover flaws, overall Very Fine. Estimate  $750 - 1,000. $0 (Image)