Vietnam US Navy Seabees Direct Embroidered Poplin P-4 Shirt. Lightweight od green utility shirt. Has Vietnamese direct embroidered Captain rank and Construction specialty on collars. Above the pockets are Vietnamese hand embroidered branch and name strips. You can still make out the USN stencil on pocket. Looks like it is marked a size 16 in the neck. Has been worn and used and one small hole below collar.