Depicts Badjanani Mosque or Ancienne Mosquée de Vendredi (old Friday mosque), the oldest mosque in Medina (the historic center of Moroni). It was originally built in 1427, and a minaret was added in 1921.

The inscription "Bank of Comoros" in Arabic letters above, engraver's initials below.

Engravers: Robert Cochet

Depicts a crescent with four five-pointed stars similar to the flag of Comoros (1975-1978) above denomination, date below, the inscription "Essai" (a coin prototype) below date, Emission Institute in the bottom.

The four stars symbolize the four islands of the Comoros. The star and crescent symbol stands for Islam, the nation's major religion.

The date is surrounded by the Paris Mint mark (Cornucopia, left) and the engraver general's privy mark (dolphin, Émile Rousseau, 1977, right).

On December 31, 1974, the Comoros Emission Institute was established with its head office in Moroni and its administrative headquarters in Paris. On January 2, 1975, an agreement was signed between the Comoros' Minister of Economy and Finance and the French Secretary of State for Overseas Departments and Territories. This agreement outlined the transfer of authority for issuing banknotes and coins to the Comoros Emission Institute and provided for the opening of an operations account with the French treasury, detailing its operating conditions.