Butterick 3518 vintage sewing pattern, dated ca 1982. 

Misses' Dress and Vest.

Loose-fitting dress 2 inches below mid-knee has notched collar and lapel, front buttoned closing, elasticized waistline and short or full length sleeves with elasticized lower edges.  Loose-fitting vest has self lining and hemline gathered into straight waistband extending into ties. 

Sizes   10 - 12 - 14:

Bust    83 - 87 - 92 cm / 32.5 - 34 - 36 inches

Waist  64 - 67 - 71 cm / 25 - 26.5 - 28 inches

Hip      88 - 92 - 97 cm / 34.5 - 36 - 38 inches

Pattern pieces are uncut, and each piece has been roughly separated from the main tissue sheet. ( no lines have been cut). Envelope is in good vintage condition, with some corner wear and a store stamp.

More '80s patterns here:

https://allthepreciousthings.com/collections/1980s