Authentic WWII ARMY Early 60’s/late 50’s OG-107 fatigue shirt 76th Infantry 'Nam

Early 60’s/late 50’s OG-107 fatigue shirt with late 60’s-1970’s insignia.
Its 76th Infantry Division. Worn during Vietnam War era
Says “Dabros” (My Uncle) and “US ARMY” other pocket
Info given to me:
“The shirt (OG107 cotton sateen, plain cuffs, pocket flaps with clipped corners, and brown rimmed plastic buttons) was first adopted in 1952, a revision of the 1947 pattern shirt (same pattern but in HBT cotton fabric). This pattern would be made into the early 60s, the only difference being the buttons were changed from the rimmed brown type to a rimless OD green version.
Of course, the older shirts would continue to be issued and worn well into the late 60s/early 70s, like the one you have. I've heard that career soldiers often preferred the older version of certain uniform items as sort of a badge of seniority.”

Condition: Is excellent like it was never or hardly worn.
Arm Pit to pit approx 21”, Arm Pit bottom to bottom of jacket approximately 16”
I’d call this a Medium Size based on m