cover 1871 and 1872 XU5 to the same addressee in Scotland, each bearing 1867-80 1/-, the former tied by very light ''B32'' numeral with ''BUENOS AIRES'' double-arc d.s. on reverse, the latter tied by ''BUENOS AIRES'' c.d.s. and London arrival numeral, and bearing on reverse Argentine 5c. tied by blue circular ''ADMON DE CORREOS/RANCHOS'' and small ''DUMFRIES'' c.d.s.; one 1/- defective, the other with some stained perfs., the XU5 with perimeter faults and filing notes on front. An unusual pair