Vintage collared ballgown with full skirt

Maxi-length ballgown in black taffeta fabric. Front has gold buttons and a wrap waist tie with pleated detail on both back and front of the bodice. It's really flattering, shows just the right amount of cleavage and can cinch in a bit at the waist if necessary. Attached lining has tulle for additional volume. Vintage size 14 but fits more like a 10. Wore it to an event at the Library of Congress (with my book purse) and loved it! First pic is from there. I'm 5'8" and wore flats, and as you can see it was just an inch or two off the ground, so anyone shorter would probably need to wear heels or get it tailored. 19" pit-to-pit, 17" waist, 58" long. Excellent used condition except for a light spot on the back. It's not exactly a stain, it's just that it looks lighter than the surrounding fabric at certain angles. It's the small white-ish blob in the last pic. I don't think it's noticeable but wanted to point it out.