Simplicity 7142 vintage sewing pattern, dated 1975.
Simple-To-Sew Misses' and Women's Skirt in Three Lengths:
The skirt with back zipper has waistband V. 1 is short length. V. 2 is regular length. V. 3 is ankle length.
Size 18 and 20 (both sizes included):
Bust 40, 42 inches / 102, 107 cm
Waist 32, 34 inches / 81, 87 cm
Hip 42, 44 inches / 107, 112 cm
Pattern is cut ( to longest length and size 20 ), checked complete. Envelope is in good vintage condition, envelope has light shelf wear and a handwritten name on the front.
More '70s patterns here: