Image of knitting Madonna

I accidentily came across this image of a knitting Madonna. This is a painting of the Holy Family, attributed to Ambrogio Lorenzetti (ca. 1345) of Siena. Size 54.5 x 25.5 cm. I think I have seen it in person years ago in the Meermanno Museum in The Hague, but didn't notice the knitting back then. I do remember drooling over the thread reel standard.