Reza Shah's monetary reform of 1932 replaced the older Qiran system with a decimalized Rial structure, and this half-Rial belongs to the transitional period during which the new denominations were being introduced to a population still accustomed to the previous currency. Reza Shah had seized power in 1921 and was crowned in 1925, spending much of the following decade aggressively modernizing Iran's institutions — the coinage reform was inseparable from that broader program of state centralization.
The .828 silver fineness is specific to this series and was not carried forward into later Pahlavi coinage.
Reza Shah's monetary reform of 1932 replaced the older Qiran system with a decimalized Rial structure, and this half-Rial belongs to the transitional period during which the new denominations were being introduced to a population still accustomed to the previous currency. Reza Shah had seized power in 1921 and was crowned in 1925, spending much of the following decade aggressively modernizing Iran's institutions — the coinage reform was inseparable from that broader program of state centralization.
The .828 silver fineness is specific to this series and was not carried forward into later Pahlavi coinage.