Rare 1950's or 60's Michael Novarese coat dress

This absolutely gorgeous navy blue Michael Novarese piece looks like it is a coat dress -- probably worn over tight pants back in the day. Now could be worn as a coat, duster or dress. Early Michael Novarese garments are incredibly rare and hardly go up for sale. Michael Novarese was an American designer who designed dresses for many Hollywood stars including Jane Russell, Liza Minnelli, Judy Garland, Dinah Shore and Elizabeth Taylor to name just a few. Buttons to just waist and then is open. Looks to be from the 1950's or early 1960's. The fabric is either a raw silk or linen. 3/4 sleeves. Fully lined with the same raw silk or linen. There is no size tag -- I would guess it to be a size 4 or 6. See measurements below and rely on them. Approximate measurements: armpit to armpit = 19.5", waist = 14.5" and length = 45". Gathers fall from the waist. This is a heavier textile showing the quality of the fabric. In excellent condition with no signs of wear.