Vintage patterned sweater

I’m not sure how old this is. It was handed down to me by my Mum & I’ve had it since the late 80’s. Zips at the neck. Good vintage condition, with some pilling that could probably be removed. No size or fabric tags, but would probably fit anywhere from XS to M. Fabric definitely contains wool, if not all wool. Pit to pit = 47cm Length = 60cm (not including collar)