Pakistan's shift to nickel brass for this denomination in 1965 was a direct response to rising metal costs — the earlier bronze composition had become uneconomical to strike at this size and weight. The change was made quietly, without fanfare, as part of a broader rationalization of the subcontinent's subsidiary coinage following the monetary disruptions of Partition's aftermath.
Pakistan's shift to nickel brass for this denomination in 1965 was a direct response to rising metal costs — the earlier bronze composition had become uneconomical to strike at this size and weight. The change was made quietly, without fanfare, as part of a broader rationalization of the subcontinent's subsidiary coinage following the monetary disruptions of Partition's aftermath.