Courreges gown - any idea what year it's from or ballpark era?

[Passion4Fashion72]

I just bought this Courreges gown and I am having trouble figuring out what year it was made or which collection it came from - any ideas/suggestions are welcome. Thanks!

 

[poppysvintageclothing]

It looks 70s to me. We don't have this particular label in our resource.

http://vintagefashionguild.org/label-resource/courreges/

 

[Passion4Fashion72]

i can't find the label anywhere - it's puzzling me. any clue where i might be able to research online Courreges collections from the 1970's?