US Marine Unisex Uniform Shirt, With Rank Patches, Corporal, Khaki, 43" chest

This is an fantastic khaki green US Marines dress shirt with rank patches on both short sleeves. It is my understanding this is a corporal. I've shown it on a female dress form simply because I don't have another but I think it was probably intended for a man as there seems to be a size S mark inside it, so I've labeled it unisex. (If you know different, please let me know! And if you'd like to see it off the dress form, don't hesitate to ask.). There are no labels, it feels like a cotton blend. It is marked inside the collar with what I think is a previous owners name, Hobbs perhaps? and there are some numbers printed inside it.
Excellent preowned condition. There's a tiny orange mark on one of the pockets. Otherwise very little signs of wear.

armpit to armpit across bust all round: 43"
waist:38"
length shoulder to bottom hem: 24.5" on the side, a bit longer front and back

Size: Unisex Small