Simplicity 6028 vintage sewing pattern, dated 1965.

Misses' Dress in Two Lengths with Two Skirts:

Dress has skirt with gathers, back zipper closing and is lined when made of lace, eyelet or sheer fabric. Sleeveless ankle length View 1 has scalloped neckline and ribbon belt. Street length View 2 has low round neckline, short set in sleeves and ribbon belt. Street length View 3 has scalloped neckline, short set in sleeves, straight skirt with front gathers and back darts and self fabric or purchased belt. 

Size   18:

Bust   38 inches / 97 cm

Waist 30 inches / 76 cm

Hip     40 inches / 102 cm

Pattern is unprinted, unused and factory folded. Envelope has shelf wear, small holes, paper tanning.

More '60s patterns here:

http://allthepreciousthings.com/collections/1960s