German mark was the official currency of West Germany from 1948 to unite Germany in 1990 and then became the official currency of the united Germany from 1990 to the adoption of the euro official of Germany in 2002 and issued the mark in 1948 when Germany wasunder Allied occupation, rather than Reich Mark German in in 1998the European Central Bank announced the installation of the euroexchange rate against the deutsche mark = 1.95583 when Mark wasthe German mark is the fourth largest reserve currency