SBC, which had entered the 1950s with 31 branch offices in Switzerland and three abroad, more than doubled its assets from the end of the war to CHF 4 billion by the end of the 1950s and doubled assets again in the mid-1960s, exceeding CHF 10 billion by 1965.[71] In 1961, SBC acquired Banque Populaire Valaisanne, based in Sion, Switzerland and the Banque Populaire de Sierre.[46] The bank opened a full branch office in Tokyo in 1970.[71]