Simplicity 7168 vintage sewing pattern, dated 1975. 

Misses' Jiffy Dress in Two Lengths and Belt:

The long or short dress with front slit opening at high round neckline has collar, back zipper, long raglan sleeves gathered with elastic casings and self fabric top-stitched belt and tie ends stitched to front. 

Size  12:

Bust  34 inches / 87 cm

Waist 26 1/2 inches / 67 cm

Hip    36 inches / 92 cm

Pattern is cut and checked complete. Envelope is in good vintage condition.

More '70s patterns here:

http://allthepreciousthings.com/collections/1970s