Joint issue San Marino - Gibraltar

The background of the sheet features maps of Gibraltar and San Marino, details of Mount Titano and the Rock of Gibraltar, and their respective flags. In the centre are the four stamps: the stamp at the top left depicts the Second Tower of San Marino, with the legends “SAN MARINO”, “Second Tower” and the value “1.50”; the stamp at the top right depicts the Moorish Castle of Gibraltar, with the legends 'SAN MARINO', “Castello Moresco-Gibilterra” and the value “1.50”; the stamp at the bottom left depicts an image of Mount Titano and is completed by the legends “SAN MARINO”, “Monte Titano” and the value “1.50”; the stamp at the bottom right depicts an image of the Rock of Gibraltar with the legends ‘SAN MARINO’, ‘Rocca - Gibilterra’ and the value ‘1.50’. Each stamp is completed by the institute that oversaw the printing, the year of issue and the name of the author of the sketch ‘B&AR’.