Vntg Creighton USAF Military Shirt

Vintage 1940s or 50s Creighton regulation Military Style Creighton has several different labels and I can't identify time period. Well preserved USAF patches 26" pit to pit, 30" length 17" neck, 26" sleeve No Size label, measurements Support XL Some rust stains on inside collar from years on wire hanger. Previously dry cleaned Staples are at bottom of placket, not sure why History #zip