Reza Shah's monetary reform of 1931 replaced the Qajar-era currency system with a decimalized rial, and this coin belongs to the first series struck under that new framework. The reform was part of a broader modernization push that included abolishing capitulatory rights held by foreign powers — rights that had previously given Britain and Russia effective control over Persian customs revenue and, indirectly, over the monetary system itself.
The .828 fineness is notably lower than the earlier Qajar silver, a pragmatic adjustment as global silver prices remained volatile following the collapse of the international gold standard.
Reza Shah's monetary reform of 1931 replaced the Qajar-era currency system with a decimalized rial, and this coin belongs to the first series struck under that new framework. The reform was part of a broader modernization push that included abolishing capitulatory rights held by foreign powers — rights that had previously given Britain and Russia effective control over Persian customs revenue and, indirectly, over the monetary system itself.
The .828 fineness is notably lower than the earlier Qajar silver, a pragmatic adjustment as global silver prices remained volatile following the collapse of the international gold standard.