70s/80s Tan Red White Blue Blouse (M/L)

Tan red white blue blouse from the 70s/80s era. No brand or size tags remain. 3/4 sleeve, button down with collar. Fits best as M-L in my opinion but please refer to measurements below taken laid flat:
Chest (armpit to armpit) 19"
Length 25"
Shoulders 15"