50 Francs

The Comoros franc has been pegged to the euro (and before that, the French franc) since 1994 through an agreement with the French Treasury, which guarantees convertibility and obliges the Banque Centrale des Comores to hold its reserves accordingly. That arrangement — unusual for a fully independent state — constrains the central bank's ability to adjust monetary policy, making coin design and issuance among the few genuinely autonomous decisions it exercises.