Moda Spiegel Baby Blue Knit Cardigan (Vintage?)

Gorgeous shade of blue! I love this cardigan, but it doesn't really flow well with my wardrobe. It is so well made and all of the seams are reinforced. 100% cotton and made in Turkey. It's preloved but it's nearly as good as new other than the tiniest amount of fraying on the inside tag. I bought this from a vintage seller - I honestly don't know how to date clothing but she told me it was from the 80's - I'm not going to say for sure it is but she seemed trustworthy. For reference, I am 5'10.