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
Hippolyte De La Rue instructors course at No. 1 Flying Training School (No. 1 FTS), Point Cook. On exchange in Britain during 1929–30, De La Rue underwent familiarisation with aircraft carriers, and served on the staff of No. 201 (Flying Boat) Squadron, based on the south coast of England. Upon his return to Australia in 1931, he was given command of the RAAF's Seaplane Squadron at Point Cook. Promoted wing commander in December 1932, De La Rue led No. 1 FTS from early 1933. He was promoted group captain in January 1937, and took over as commanding officer (CO) of Headquarters RAAF Station Richmond,