Vintage German Army Green Wool Jacket Military Bomber Coat

this piece is vintage and in great shape but for a black burn/stain at front of left collar lapel. There are no tags or label so I am not sure the fabric or sizing etc. Measurements : Length (bottom of neckline to hem) about 27 inches / Width (armpit to armpit) about 20 inches. I would say this is a Small/Medium heavy structured jacket (thick material) military jacket with german flags