Lot 20058 – 1856 Mazatlán ½ Real Blue group

Mazatlán ½r blue, group of seventeen stamps comprising singles, pairs, strips and two cover fronts, mostly well margined, including Mazatlán (Schatzkès #739 and #742), Cosala vertical pair off cover and strip of four with red cancel on cover front (#756), Culiacán pairs and strip of three (#759), El Fuerte strip of four on cover front (#763), single with Sinaloa (#782). NF $680 as singles off-cover.