70s (?) Lanvin skirt - is this Couture?!

[Esther]

Hello everyone,
I acquired this gorgeous Lanvin printed cotton maxi skirt recently. I think it's from the 70s, maybe late 60s?

I wonder if it is couture because of the number printed on the label.

It is a faux wrap skit that actually closes with a metal zip and a button. There is a lot of hand sewing, apart from the side seem i think all the sewing is done by hand.

But then, i imagine that a couture piece wouldn't have a size indication? The bigger label also says "Destination: shop".
Any help would be appreciated!
Thanks,
Esther

 

[Jonathan]

It's not couture - it's boutique, which is high end ready to wear, and is a registered design. The maxi length with the bold Chinese-inspired floral pattern suggests early-mid 70s to me.

 

[Esther]

Thank you, Jonathan!