MEXICO 1934 50c dull blue, Sc 703, used pair (perf faults), Scarce duo

MEXICO 1872 50c yellow Hidalgo watermark “LA + F” imperf with “Guanajuato” local district overprint (Scott 84d, SG 90i), used, four clear to large margins, thinned. Very scarce, cat $2,000 = £1,650+