The Treasure of the Silver Lake
Der Schatz im Silbersee (original)
Fred Engel's father is murdered by Colonel Brinkley in order to acquire a treasure map, however the Colonel only acquires half of it, the other half as held by Mrs. Butler. Discovering the scene of the crime, Old Shatterhand and Winnetou help Fred bring his father's murderer to justice and locate the treasure of Silver Lake.
Starring Lex Barker, Pierre Brice, Götz George, Karin Dor, Herbert Lom, Marianne Hoppe, Ralf Wolter, Eddi Arent, Mirko Boman, Sima Janićijević
It's a action & adventure and western movie, and has a rating of 6.8 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Argentina.