Simplicity 8249 vintage sewing pattern; ©1978. 

Misses' Dress in Two Lengths:

The dress with collar, back zipper, long set-in sleeves gathered to buttoned cuffs can be worn with or without self tie belt. Regular length V. 1 and long length V. 3 have tucked front stitched to yoke. Regular length V. 2 has front softly gathered to yoke. 

Size  12:

Bust  34 inches / 87 cm

Waist 26 1/2 inches / 67 cm

Hip    36 inches / 92 cm

Pattern is UNCUT and factory folded.. Envelope is in good vintage condition, with some light spotting on the back and wear around opening.

More '70s patterns here:

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