Question: What was the Douglas C-47 Skytrain carrying in the 1951 French crime film directed by Jacques Daniel-Norman?

Context paragraphs:
Dakota VT-CLA: Dakota VT-CLA was a Douglas C-47 Skytrain carrying medical supplies to the national government of Indonesia at Yogyakarta on 29 July 1947.

Douglas C-54 Skymaster: The Douglas C-54 Skymaster was a four-engined transport aircraft used by the United States Army Air Forces in World War II and the Korean War.  Like the Douglas C-47 Skytrain, the C-54 Skymaster was derived from a civilian airliner, the Douglas DC-4.  Besides transport of cargo, the C-54 also carried presidents, prime ministers, and military staff.  Dozens of variants of the C-54 were employed in a wide variety of non-combat roles such as air-sea rescue, scientific and military research, and missile tracking and recovery.  During the Berlin Airlift it hauled coal and food supplies to West Berlin.  After the Korean War it continued to be used for military and civilian uses by more than 30 countries.  This was one of the first aircraft to carry the President of the United States.

Douglas C-47 Skytrain: The Douglas C-47 Skytrain or Dakota (RAF designation) is a military transport aircraft developed from the civilian Douglas DC-3 airliner.  It was used extensively by the Allies during World War II and remains in front line service with various military operators.

Isachsen: Isachsen is a remote Arctic research-weather station named after the Norwegian explorer of the Arctic, Gunnar Isachsen.  It is located on the western shore of Ellef Ringnes Island in the Sverdrup Islands, in the territory of Nunavut in Canada.  Isachsen Station was established to participate in a joint Canadian-American weather observation program.  Isachsen Station operated from April 3, 1948 through September 19, 1978.  Regular weather observations began on May 3, 1948.  In October 1949, a Douglas C-47 Skytrain (tail number 316062) crash-landed near the station.  No one was injured, but the wreckage has been preserved by the cold weather and dry conditions.

Dakota 308: Dakota 308 is a 1951 French crime film directed by Jacques Daniel-Norman and starring  Suzy Carrier, Jean Pâqui and Louis Seigner.  The plot concerns a Dakota carrying a shipment of gold to  Brazzaville.

1945 New Guinea Gremlin Special rescue: The Gremlin Special was a Douglas C-47 Skytrain that crashed during a sightseeing flight over the Shangri-La valley in New Guinea in 1945.  The recovery of the three survivors from an isolated valley surrounded by mountains, enemy troops, and native inhabitants made worldwide news at the time and is the subject of the 2011 book "Lost in Shangri-La" by author Mitchell Zuckoff.

1974 Togo plane crash: On 24 January 1974, a Togo Air Force Douglas C-47 Skytrain carrying several notable political figures crashed at an isolated location near the village of Sarakawa in northern Togo.  Gnassingbé Eyadéma, the President of Togo, was on board the aircraft, which was flying from Lomé to his native village, Pya.  As the C-47 descended for landing, it crashed near Sarakawa.  Eyadéma survived, but his French pilot and three other passengers died.

2010 Air Service Berlin Douglas C-47 crash: On 19 June 2010, a vintage Douglas C-47 Skytrain aircraft crashed shortly after take-off from Berlin Schönefeld Airport to a sightseeing flight over Berlin, which was operated by Air Service Berlin, a provider of event flights.  There were no fatalities, but seven out of the 28 passengers and crew were injured.

Tourments: Tourments English: Agonies , is a French drama film from 1954, directed by Jacques Daniel-Norman, written by Jacques Daniel-Norman, starring Paul Azaïs and Louis de Funès.

List of surviving Douglas C-47 Skytrains: This is a list of surviving Douglas C-47 Skytrain and variant aircraft, including the C-53 Skytrooper, C-117 and R4D.

Supporting paragraphs: Dakota 308 Douglas C-47 Skytrain
Answer: a shipment of gold