1874, Coat of arms with overprint "CONTRA SELLO" 2r. green, horizontal pair tied by lozenge of dots to cover to Bordeaux with black "ADMINISTRACION LA UNION CORRESO FEB 24 1878" despatch mark alongside, British "PANAMA MR 5 78" transit thence via London with further blue "T" marking and taxed upon arrival with "34" decimes, deleted as double-rate and charged with "22" decimes, some light ageing, an very attractive and rare usage of this issue
