vintage 60s/70s Quad (of London) gold brocade maxi dress

stunning gold & black brocade (likely poly)high necked dress with ruffled yoke & sleeves, has attached velvet sash/bow at waist, zips up back, bodice & skirt lined in black acetate. length is 55,” bust 36” max, waist to 29,” hips to 48.” I see no flaws, armpits pristine, no smells-I suspect it is unworn. vintage sizing is much smaller than current sizing & UK sizing even more so-this is not a 14. please go by my measurements & please ask if you would lime more specific measurements or photos