20 Afghanis

Afghanistan's Ministry of Finance issued paper currency directly — bypassing a central bank — during a period when Da Afghanistan Bank either lacked authority or capacity to manage note issuance independently. The P#18A is part of a series tied to that arrangement, an administrative oddity that distinguishes Afghan issues of this period from most contemporaneous Asian emission structures.

Cotton substrate was the practical choice for a country with punishing circulation conditions: heat, dust, and repeated hand-to-hand transfer in bazaar economies destroyed rag paper quickly. Notes from this series that survived did so largely outside active commerce.