20 Dinars

Algeria's shift to bimetallic coinage in the early 1990s followed a period of severe economic strain brought on by collapsing oil revenues and the austerity measures imposed after the government's 1986 debt crisis. The 20-dinar piece entered circulation just as the country descended into the civil conflict that would define the decade — the so-called "Black Decade" following the 1991 electoral crisis and subsequent military intervention.

The Banque d'Algérie continued issuing this type across three decades with minimal modification, an unusually long production run that reflects institutional conservatism rather than design satisfaction.