Lot
646 
Mexico, 1861 Durango Sello Negro Collection, of 12 covers on exhibit pages; includes usages from Durango (Schatzkes 234+237, 238 & 241F), Cuencame (249) x2, San Dimas (252A & two 252 with different rates), Gavilanes (256), Nazas (274), Mineral del Oro (278+279) and very scarce Tamazula (286) (no photo). Estimate $300 - 400.
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Realized: $290