US issue vietnam era backpack vintage

Extremely well constructed bag with beautiful patina throughout. The pockets on each side are large enough to hold a handle of grey goose each as well as covers with Velcro and eyelets alone the sides for sizing. The plastic lining at the bottom is somewhat broken but surprisingly in tact for its age. The interior is coated with a wax as well & the exterior has 0 & D rings throughout. - OS (13" x 6" x 14")