De La Rue 1968, but this was rejected by the Monopolies commission as being against the public interest. In 1991 the company's name was changed again – this time to "De La Rue plc". In 1965 De La Rue established a joint venture with the Italian printer and inventor Gualtiero Giori called De La Rue Giori. Based in Switzerland, the company specialized in building banknote printing equipment. The company printed banknotes for the Central Bank of Iran during the 1960s. In 1995, the company acquired Portals Limited which had been listed on the London stock market since 1904. For almost 300 years Portals
Warren De la Rue memoirs, entitled "Researches on Solar Physics", published by De La Rue, in conjunction with Professor Balfour Stewart and Mr B Loewy, in the "Phil. Trans." (vol. clix. pp. 1–110, and vol. clx. pp. 389–496). He took some of the very first photos of the moon, so he got a crater named after him the "De La Rue (crater)". In 1860 De La Rue took the photoheliograph to Spain for the purpose of photographing the total solar eclipse which occurred on 18 July of that year. This expedition formed the subject of the Bakerian Lecture already referred to. The photographs obtained