The 1972 film "Travels with My Aunt" is based on the 1969 novel Travels with My Aunt by Graham Greene. Augusta Bertram (Maggie Smith) approaches Henry Pulling (Alec McCowen) at his mother's funeral and tells him that she is his aunt. She then involves him in various illegal financial transactions in various parts of Europe while telling him her life story and about her many lovers. After paying a ransom for a friend of hers, Augusta, Henry, and a friend flip a coin to decide whether to continue the partnership. The friend throws a coin into the air. The coin is a real Spanish 100 pesetas silver coin dated 1966 which has Spain's dictator Francisco Franco on it.

Henry Pulling is waiting at a London funeral parlor for his deceased mother's ashes. Augusta Bertram introduces herself as the sister of his mother and takes him back to her apartment.

Augusta shares the apartment with Zachary Wordsworth (Louis Gossett Jr.), a fortune teller. She tells Henry that one of her old lovers, Ercole Visconti (Robert Stephens), has been kidnapped by a gang which wants $100,000 for him. Augusta persuades Henry to accompany her and Zachary to Paris and then on a train to Istanbul. She is carrying a large sum of British money to a contact in Turkey. On the train they meet Tooley (Cindy Williams), an American hippie girl who plans to go to Kathmandu.

Tooley and Henry become friends during the trip. Augusta and her friends are stopped in Edirne (Turkey) and sent back. She goes to visit another old boyfriend, Achille Dambreuse (Jose Luis Lopez Vazquez), they have an encounter, after which he dies. Augusta goes to see his mother Mrs. Dambreuse (Valerie White).

Augusta asks Mrs. Dambreuse for money for her silence but is refused. Augusta then decides to sell a painting of her which was done when she was younger by a now well-known artist.

She gets $125,000 for the painting and then accompanied by Henry and Zachary go to meet the kidnappers with a suitcase containing the money.

They trade the money for Ercole Visconti. Ercole reveals to Augusta that he wasn't actually kidnapped but was trying to get money he thought Augusta had. Ercole and the kidnappers leave. Henry then reveals that he had filled the suitcase with fake money and kept the $125,000. Augusta asks him if he wants to travel with her and her friend.

He is not sure whether he wants to keep travelling with Augusta and Zachary and decides to flip a coin.

The coin flies upward and rotates.

The coin is a silver Spanish 100 pesetas coin dated 1966 and minted only in that year. It has a portrait of Spanish dictator Francisco Franco on one side.

A Spanish 1966 100 pesetas coin:

Silver, 34 mm, 19.0 gm

Obverse:
Head of Francisco Franco facing right
FRANCISCO FRANCO CAUDILLO DE ESPANA POR LA G. DE DIOS 1966
Reverse:
Crown, eight-sided circle, castle, lion, 100 PTAS

The three companions watch the coin in the sky.

Maggie Smith as Augusta Bertram
Alec McCowen as Henry Pulling
Louis Gossett Jr. as Zachary Wordsworth
Robert Stephens as Ercole Visconti
Cindy Williams as Tooley
Jose Luis Lopez Vazquez as Achille Dambreuse
Valerie White as Mrs. Dambreuse
Director: George Cukor
Writers: Jay Presson Allen, Hugh Wheeler
Based on the 1969 novel Travels with My Aunt by Graham Greene