1 Unmounted mint (UM) â the stamp is unused and appears never to have been mounted. 2  Mint never hinged (MNH) â the same as unmounted mint but with an assertion that the stamp is not a formerly mounted stamp that has been tampered with to remove traces of mounting.
vermilion zone, n the external darkish area of the upper and lower lips, extending from the junction of the lips, with the surrounding facial skin on the exterior to the labial mucosa within the oral cavity.
The lips are a highly visible facial structure used in speech articulation, food consumption, and tactile sensation. Because of their prominent location on the face, lacerations of the lips can be cosmetically deforming. See the images below. Lip laceration involving the lower vermilion border.