The dress, dating to around mid 1900s, consists of a separate bodice and skirt. 
It's made of delicate black silk satin and ivory silk chiffon, a colour combination very popular in the period. The design features fine black lace and black and gold gel sequin embellishment, forming a swirl design.
The skirt has an in-sewn separate silk lining, which gives it a beautiful dramatic drape and volume. 
Both fasten with hooks and eyes at the back. The bodice features original boning and a pigeon-breast shaped front, that accentuates the bust and makes the waist look smaller.

Very good condition given the age, with small signs of wear and damage.

Full measurements:
Bodice:
Shoulder to waist: 17”
Shoulder to nipple: 10”
Bust (circumference): 66”
Waist (circumference): 60”
Skirt:
Waist (circumference): 50” altered from 60'' (can be made bigger again)
Hips (circumference): 96”
Waist to floor - front: 39.5”
Back (with the train): 58”

Model’s measurements:

Height: 5ft 3"

Bust: 32"

Waist: 26.5"

Hips: 36"