classic cut, below-the-knee length trench, by "FOG by London Fog by Londontown", who definitely have a theme running between their labels.
it has an ACTWU union label, so would have been made between 1976 and 1995.
made of a floral taffeta, in a steely blue-gray and bronze iridescent sheen.
very pretty buttons, as well as belt, long rain guard in back, and shoulder epaulettes for a little flair.
fully lined in a matching, but solid, taffeta.
slightly contoured, most mostly a longline cut.

excellent used condition.

MEASUREMENTS: 
no stretch, but can adjust a bit at waist, with the belt.
48" bust.
up to 45" waist.
50" hips.
49" long.
labeled size 10R, it is apparently meant to be oversized but i think it could fit up to an XL nicely.