Butterick 4171 vintage sewing pattern, dated ca 1960s.
Misses A-Line skirt is darted into waistband and knee or above knee length and has a back zipper.
Size 12:
Waist 26 inches / 66 cm
Hip 36 inches / 91 cm
Pattern is UNPRINTED and checked complete. Envelope has age tanning and shelf wear, small tears near flap.
More '60s patterns here: