This is a Vogue pattern #1907, a pull-on dress in 2 lengths by Yves Saint Laurent. A perfect style to show off a special fabric, part of the Very Easy Vogue line. Pattern is cut/complete but collar may have been modified. Size 12. I believe this is from the late 1970's.  Does not have a garment label. Slight damage, tears, or label residue may be on envelope.. I'm  offering FREE US SHIPPING on this item!!! NOTE: Three cats wandered into my gravitational field and my heart. They live indoors only and even though I try my best to keep them away there may be one or two...or three cat hairs included. If you are allergic please don't buy.