Early Boy Scouts America shirt, c. 1930's - 1940's 
Olive color, exchangeable buttons, and a bunch of amazing patches throughout.
Tagged size Age 18 - Neck 14 1/2
 
Measurements
Shoulders 17 1/4 - 44cm
Pit to pit 21 1/2 - 54,5cm
Centre back length 30" - 76cm