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The Ottoman Public Debt Administration was not a bank — it was a multinational creditor body established in 1881 to manage the empire's defaulted external debt on behalf of European bondholders. That it issued currency at all is a product of wartime desperation. When the First World War severed the Ottoman government's access to French-printed notes, the OPDA's printing facilities in Constantinople were pressed into service, producing emergency issues that blurred the line between debt administration and monetary authority in ways that would have been legally unthinkable a decade earlier.

Pick 89 belongs to the 1915 kaime series issued under that arrangement. Surviving examples frequently show uneven inking — a known characteristic of the wartime production run.