Butterick See & Sew 5471 vintage sewing pattern, dated 1986.
Misses' Dress:
Very loose-fitting, straight dress, below mid-calf, has collar, mock front band, dropped shoulders, back pleated into yoke with forward shoulder seams, shaped hemline and long sleeves with button pleat rolled-up (wrong side shows). Narrow hem. Purchased belt.
Sizes 10 - 12 - 14:
Bust 83 - 92 (32 1/2 - 36 inches)
Waist 64 - 71 cm (25 - 28 inches)
Hip 88 - 97 cm (34 1/2 - 38 inches).
Pattern is uncut and factory folded. Envelope is in good vintage condition.
More '80s patterns here:
https://allthepreciousthings.com/collections/1980s
