Introduced in December 1921 and having the same ratio of silver-to-copper as the Morgan dollar, the Peace dollar, designed by medalist Anthony de Francisci, was promulgated to commemorate the signing of formal peace treaties between the Allied forces and Germany and Austria. These treaties officially ended the Allies' World War I hostilities with these two countries. In 1922 the Mint made silver dollar production its top priority, causing other denominations to be produced sparingly if at all that year. Production ceased temporarily after 1928; original plans apparently called for only a one-year suspension, but this was extended by the Great Depression. Mintage resumed in 1934, but for only two years.