Constituted in Madrid on 19th April 1924. Modified 30th September 1924 and 17th January 1925.
Capital 115,000,000 pesetas in 30,000 ordinary shares of 500 pesetas and 200,000 preference shares of 500 pesetas.
1925: 150,000,000 in 40,000 ordinary and 260,000 preference shares of 500 pesetas
30 March 1926: 220,000,000 in 40,000 ordinary and 400,000 preference shares of 500 pesetas
November 1926: 250,000,000 in 100,000 ordinary and 400,000 preference shares of 500 pesetas.
1953: 3,000,000,000, all in ordinary shares
1956: 5100,000,000, all in ordinary shares.
13 November 1959: 8925,000,000 all in ordinary shares
1963: 14,223,611,000, all in ordinary shares