Butterick 4484 vintage sewing pattern, dated 1989.
Men's Vest:
A,B: loose-fitting vest has cut away armhole, welt pockets and back belt. B: front collar. C,D: very loose-fitting, unlined vest has forward shoulder seams, pocket variations with flaps. C: side slits and snap closing. D: collar and lower band.
Size XS - S - M:
Chest 32 / 34 - 36 / 38 - 40 inches / 81 / 87 - 92 / 99 - 102 cm
Waist 26 / 28 - 30 / 32 - 34 inches / 66 / 71 - 76 / 81 - 87 cm
Pattern pieces for view A have been cut, checked complete. Remaining pieces are uncut. Envelope is in good condition, with a store stamp on the front.
More men's patterns here:
https://allthepreciousthings.com.au/collections/men