Vintage men's 1940s-50s olive drab wool military button front field shirt. Features two chest pockets. Believe it may be British. In good, used condition. 

manufacturer | illegible
tag size | illegible -- est. it to best fit men's M/L
*refer to measurements for sizing as this is an estimate

measurements {taken laying flat}:
chest -- 22.5" 
shoulders -- 17"
waist -- 22"
sleeve length from shoulder seam -- 22.5"