Bhutan's early machine-struck coinage was produced in limited quantities at the Calcutta Mint under British Indian oversight, reflecting the kingdom's treaty relationship with British India rather than any independent minting capability. The "large type" designation distinguishes this from the later reduced-flan issue, KM#23.2, struck to the same nominal value but measurably smaller — a quiet demonetization-adjacent adjustment made without formal announcement.
Bhutan's early machine-struck coinage was produced in limited quantities at the Calcutta Mint under British Indian oversight, reflecting the kingdom's treaty relationship with British India rather than any independent minting capability. The "large type" designation distinguishes this from the later reduced-flan issue, KM#23.2, struck to the same nominal value but measurably smaller — a quiet demonetization-adjacent adjustment made without formal announcement.