Covers: Spain Image Description History 10th philatelic expo,Narciso Monturiol inventor of Ictneo 1859,29 June 1974 50th anni' to the issue of Correo Submarino- Mahon- Barcelona by S-74 "Tramontana", 5 Feb' 1988 50th anni' to the issue of Correo Submarino- Barcelona- Cartagena by S-74 "Tramontana", 8 Feb' 1988 50th anni' to the issue of Correo Submarino- Mahon- Barcelona by S-74 "Tramontana", souvenir sheet 50th anni' to the issue of Correo Submarino, Filatelic exposition, 13-14 August 1988, Mahon Exposizione Filatelica, Arma Submarina 75 Aniversario, 23-26 Mai, 1990, Cartagena   Exposizione Filatelica 1er Centenario Del Submarino Peral, 8-11 Sep', 1988, Cartagena Correu Submari 24.06.1946 (Spanish Navy C-4, lost in an accident), 01.07.2006, Soller   Philatelic exhibition "Espana 75", Cover transported by Submarine S-34, Cosme Garcia (Ex USS Bang, SS-385), 7 April 1975   Bicentenario Del Sommergibili- Omaggio Al Caduti Del Mare, Nautilus- Fulton, 14.10.2001, 04012 Cisterna di Latina (LT) Centenari Narciso Monturiol, Museu Maritim. 23 Sep`, 1987, Barcelona