The magnetic variant of this issue — designated KM#67a — exists because the Bank of Uganda quietly shifted from nickel-clad steel with non-magnetic properties to nickel-plated steel during the mid-2000s, a cost-driven decision common across sub-Saharan central banks contending with rising base metal prices. The change was never publicly announced as a distinct issue, which is why date overlap with the non-magnetic type creates collection confusion.
The magnetic variant of this issue — designated KM#67a — exists because the Bank of Uganda quietly shifted from nickel-clad steel with non-magnetic properties to nickel-plated steel during the mid-2000s, a cost-driven decision common across sub-Saharan central banks contending with rising base metal prices. The change was never publicly announced as a distinct issue, which is why date overlap with the non-magnetic type creates collection confusion.