Brand unknown and unique, as my research indicates. A Union Label (734247) Pinked seams, bias tape, minimal machine stiching, shelf bust women’s gold, ball gown.

What makes this dress unique is the back treatment. Semi wrap, snap, rheinstone ball buttons, some stones missing, bow hook and eye.
Small mark near bottom of hem

Fabric content not available, but it could contain silk, brocade or jacquard texture

Maniquine is small size 4

Very Good condition, size S (4) and XS (000 - 2).

Detailed measurements:

Bust - 32 inches
Waist - 26 inches
Hip - 36 inches