The Upper Hand (1966)

In Paris, a gold smuggler is at war with other local gangsters who want piece of the action. Then the mob shows up and makes things worse. And an undercover US Treasury Department agent is trying to infiltrate the smuggling business.
Denys de La Patellière
Jean Gabin, Gert Fröbe, George Raft, Claudio Brook, Nadja Tiller, Marcel Bozzuffi, Mireille Darc, Claude Brasseur, Daniel Ceccaldi, Jean-Claude Bercq, Dany Dauberson, Claude Cerval, Carlo Nell, Christa Lang, Yves Barsacq, Philippe Clair, Mino Doro, Franco Ressel, Eric Sinclair, Olivier Mathot, Alexander Allerson, Joe Warfield, Benito Stefanelli, Franco Balducci, Anthony Stuart, Anne-Marie Blot, Katia Christine, Alain Bouvette, Fernand Berset, Claude Laugier, Pierre Leproux
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