Sonia Rykiel vintage bag

Vintage, good condition, no flaws I can see on outside, strap has some loose threads from the inside the strap but it’s not coming apart so I think it’s just a top stitch, doesn’t affect the bag, all studs in tack, inside has pockets and zipper compartment, it has some structure on inside, it’s thicker and feels harder than regular fabric, maybe water proof? Do not know what year it’s from but thinking early 80’s Please let me know if you need more pictures as they are part of description