Gibraltar: 1861, 27 May+27 Dec, two lettersheets originating from Gibraltar with
Gibraltar
1861, 27 May+27 Dec, two lettersheets originating from Gibraltar with full dated message each (one with blue sender's mark "MIDDLETON MACKINTOSH&BLAND GIBRALTAR"), sent overland by Spanish mail, bearing Isabella 4c. orange single resp. multiple franking each postmarked at SAN ROQUE, to Jerez de la...