Muhammad b. Idris ruled the Idrisid state from Fez at a moment when the dynasty was consolidating its hold over the Maghreb largely through religious prestige rather than military dominance — a descendant of Ali ibn Abi Talib governing at the westernmost edge of the Islamic world, far outside Abbasid reach. The Idrisids maintained their own silver coinage precisely because that independence from Baghdad demanded visible monetary expression.
Idrisid dirhams of this period are frequently underweight against the Abbasid standard, and this piece at 2.05g reflects that regional deviation rather than any damage or clipping.
Muhammad b. Idris ruled the Idrisid state from Fez at a moment when the dynasty was consolidating its hold over the Maghreb largely through religious prestige rather than military dominance — a descendant of Ali ibn Abi Talib governing at the westernmost edge of the Islamic world, far outside Abbasid reach. The Idrisids maintained their own silver coinage precisely because that independence from Baghdad demanded visible monetary expression.
Idrisid dirhams of this period are frequently underweight against the Abbasid standard, and this piece at 2.05g reflects that regional deviation rather than any damage or clipping.