Céline and YSL variation skirts

[Catherine]

Hi all,
As a newcomer writing from Belgium, I have here a question regarding a couple of skirts I bought from a charity shop in Belgium. One is Céline and I would say it is from the 70's. The other one is from Yves Saint Laurent variation line which I have no idea how old it is. I've posted pictures of skirts and inside labels and was wondering if anyone can help me to date these garments?
Merci Beaucoup,
Catherine

 

[Circa Vintage Clothing]

Bonjour Catherine,

Your YSL skirt looks '80s to me, and a similar label is in the label resource as an '80s one too.

The Celine skirt is more difficult, as the label isn't sewn in very well, also the hem is short and seems to be top stitched? If this the case, it may have been inexpertly shortened. I'm also confused about the waistband: it looks unfinished?? The label (if original) is similar to the '70s one in the LR but the skirt looks to have been altered, reducing it's value. Does it have a nylon centre back zipper and a synthetic lining?