In the beginning of the 1960s, there was a proposal by the Royal Mint Advisory Committee for a joint currency for Qatar and Dubai (the remaining Trucial States). The committee had at this stage appointed Christopher Ironside on a term contract and asked him to provide prototype designs for these coins. Three sets were prepared and presented, the first set depicted each denomination within its own geometric Arabic design which was favoured by the committee; the second set, which was a thematic set depicting a goitred gazelle (an Arabian gazelle now extinct), a peregrine falcon, a local fish, a mosque, an Arab dhow, oil derricks, and a date palm; and a third set of Arabic designs.