Simplicity 8785 vintage sewing pattern dated 1978. 

Misses’ Pullover Blouse and Tie Belt.

Top-stitched blouse gathered to yoke has button tab front, long set-in sleeves with buttoned cuffs, collar, pocket and self tie belt. 

Size      6 8 10:

Bust     30 1/2 - 31 1/2 - 32 1/2 inches / 78 - 80 - 83 cm

Waist   23 - 24 - 25 inches / 58 - 61 - 64 cm

Hip      32 1/2 - 33 1/2 - 34 1/2 inches / 83 - 85 - 88 cm

Pattern is UNCUT and factory folded. Envelope has paper tanning and an ink mark on the front.

More '70s patterns here:

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