Dating this Oleg Cassini Knit Skirt + Value?

Hi, I recently picked up this Oleg Cassini knit skirt! I absolutely love collecting, trading, and selling vintage fashion, and this was a unique piece that I just stumbled upon.

I looked at the Label Resource but couldn't find a tag that matched this one. Based on how the 'O' is written as well as the style of the skirt, I'm assuming it could be dated from the 70s-80s.

Furthermore, this skirt is too big for me, so if I were to trade/sell it, does anyone know how much this piece is worth? I went on Etsy/eBay and searched Oleg Cassini skirts (couldn't find a similar one) and found a range from $25-200.. so, quite hard to narrow haha.

Any help would be greatly appreciated, thank you so much!!

 

Do you have a photo of the entire skirt? That would help a lot.

Also, we don't provide appraisals here but, rather, the tools to research. : )