Confection Frontenac Inc. vintage 1971 men's military working jacket size M

Good pre-loved condition (see description below) Dark green men's working jacket from July 1971 No traditional size tag. I am estimating this to be a size medium; however, please review measurements below to ensure the right fit for you. Full zip with tabs on shoulders. Two front check pockets. Right chest has some snags, likely from a name tag or other sort of pin. Left shoulder has snags right by the shoulder tab. Approximate laid flat measurements: Pit to pit: 23.25" Shoulder to bottom hem: 27" Sleeve length from shoulder seam to cuff: 24.5"