Very entertaining film with a good performance by Gérard Herter.
The robbery is very unspectacular, but staged exciting and interesting.
Even Jacques Herlin figure as a mathematician is varied. Actually, despised by all people as a madman, he is in truth very calculating and selfish.
It leave Gabriella Giorgelli back in the fort, so he will not have to share with her the gold. But ultimately he dies for this greed.
I do not know why, but the second part of the movie (after the robbery) reminded me a bit of I Crudeli. And even here, no one is happy with the gold.
And I agree with LankyFellow, the score and the camera work is first class. For the Camera work by the way Stelvio Massi was responsible. And that he makes good work, is known.
The film is recommended. Certainly not a genre gem, but we experienced very entertaining minutes.