Simplicity 8583 vintage sewing pattern, dated 1978.
Misses' Three-Piece Ensemble or Blouse and Skirt:
V.1 or 2 blouse has front button closing,shirt-type collar and long raglan sleeves with buttoned cuffs. V.1 or 2 skirt gathered to shaped yoke has back zipper and waistband. Lined vest V.1 with loop and button has self drawstring thru neck casing and elastic thru waistline casing.
Bust 32 1/2 inches / 83 cm
Waist 25 inches / 64 cm
Hip 34 1/2 inches / 87 cm
Pattern is partly cut and checked complete. Envelope is in poor condition, with extensive tears around opening and store stamp on the front.
More '70s patterns here:light shelf wear.