The 1954 British film "Fire Over Africa" is about glamorous woman secret agent Joanna Dane (Maureen O'Hara) who is assigned to identify the head of a drug smuggling group in the North African city of Tangier, which was at the time an international zone administered by Great Britain, France, and Spain. The film was also released with the title "Malaga", the city in Spain.
Joanna uses her physical charms and skills to get a job at a smuggler's hangout where she can coax information out of men who find her attractive. At one point she contacts an Arab agent and hands him a coin with a message taped to it.
The coin is a Spanish 5 peseta coin dated 1949 and minted under the Franco regime.

A prologue explains that the city of Tangier is an international zone and the home of many spies and smugglers.

An overview of the city.

Many types of money are exchanged there and there are "cambio" stores for changing money everywhere.

A group of French, Spanish, and British officials meet to discuss efforts to eliminate a drug smuggling group. Several male agents have been killed by the group. An American agent, Richard Farrell, suggests using a woman agent and he recommends Joanna Dane who has worked for American intelligence agencies.

She reports to the American agent Farrell who asks her to check out two places, a bar named Frisco's run by a woman of the same name, and a shop named Ali-Baba. Joanna leaves the room and then returns.

Joanna finds Farrell stabbed leaving her without a contact person. Before dying he tells her that a man named "The Moor" works for him.

Joanna meets the manager Frisco and her looks and style get her a job at the place. A man named Van Logan has been making repeated attempts to attract her. Joanna finds "The Moor" and gives him a tip.

She gives him a coin which has a piece of paper or tape on it.

The message reads "Farrell Murdered".
There is enough of the coin showing to identify it as a Spanish 5 peseta coin dated 1949.

Nickel, 32.0 mm, 15.0 gm

The coin has an official date of 1949 but has a smaller actual minting date hidden in stars on the reverse.

The numbers in the stars are "19" and "50" or 1950.

Occasionally men get into fights over Joanna and one man actually pulls out a sword. Van Logan has been hanging around the bar.

Van Logan takes some grapes to Malaga, Spain, but his boat is hijacked by another group and he loses his cargo. Joanna has accompanied him and they land in Malaga. They continue their arguments and when he searches her purse she pulls a gun.

She does and then drives away. Back in Tangier Joanna has identified the head of the smuggling ring who is killed in a shootout. The Spanish police arrive to arrest the smugglers.

Joanna sees Van alive and he tells her that he is an American agent and was wearing a bullet-proof vest when she shot him.

Maureen O'Hara as Joanna Dane
MacDonald Carey as Van Logan
Binnie Barnes as Frisco
Hugh McDermott as Richard Farrell
Director: Richard Sale
Writers: Robert Westerby