100 Shilin / 100 Shillings

Somalia's 1980 banknote series was issued under the Siad Barre government during a period of acute economic pressure following the disastrous Ogaden War of 1977–78, in which Somalia suffered both catastrophic military losses and a refugee crisis that overwhelmed the national economy. The International Monetary Fund had already begun attaching conditions to aid disbursements, and the currency was under sustained strain.

Thomas De La Rue held the printing contract continuously through this period — their involvement with the Central Bank of Somalia predates independence and continued well past Barre's fall in 1991. The P#28 watermark security is modest for the denomination.