Original vintage WWII ANC Army Nurse Corps women's beige service hat. The size tag is no longer readable, but I would guess it is a size 21 as it seems a bit small. The eagle badge is marked on the back on the tail, but I cannot make out the markings.
Overall, fairly good wearable condition but it does have some flaws. There is what looks like a water stain on the top near the eagle insignia. The brim has some slight wear and light staining. A few tiny pinprick holes. The inside sweatband and liner have some staining. Some of the stitching is fraying. Knox logo inside.