I cannot find an English language release title for this one but it looks quite interesting. IMDb has it listed as Une Cage Doree from 1976 this is one I'll have to see with fan made subtitles if i want to understand what the Hell is going on! Here's a viewer's synopsis from the inter-web--
"Mr. Winter (Roger Darton) sees his
Kong prostitution ring threatened by the police and a rival gang.
Consequently, he decides to move his organization to Paris, where he specializes himself in
satisfying the requests of clients with very peculiar types of perversions,
punishing the prostitutes who dare to rebel against him shutting them up in a
cage with golden bars."
Sounds interesting to me!