Simplicity 9347 vintage sewing pattern ©1979. 

Men's Suit or Lined, Double-Breasted Jacket and Pants:

Top-stitched double breasted jacket with front button closing has low notched collar, long set-in sleeves with button trim, welt pockets and inside breast pocket. Top-stitched pants with front fly zipper have side front pockets, front pleats, waistband and carriers. 

Size 40:

Chest 40  inches / 102 cm

Waist 34 inches / 87 cm

Pattern is UNCUT and factory folded. Envelope is in very good vintage condition, with light shelf wear.

More men's patterns here:

https://allthepreciousthings.com/collections/men