CTOs are usually not considered desirable by collectors, but, with some issues of stamps, postally used examples are very hard to obtain; and some catalogues like Scott's will list values for CTOs and place a premium on postally used copies.
The vertebral body is the main part of the bone in the spinal column. Between these areas of the vertebrae are the intervertebral discs, which support the vertebrae above and cushion the area between the bones. The major portion of the vertebra faces the body, in front of the spinal cord, in humans.he vertebral body is the main part of the bone in the spinal column. Between these areas of the vertebrae are the intervertebral discs, which support the vertebrae above and cushion the area between the bones. The major portion of the vertebra faces the body, in front of the spinal cord, in humans.
ANATOMY/PATHOPHYSIOLOGY. The spinal (or vertebral) column is composed of 33 bony rings or vertebrae, named for the region of the spine in which they are located and numbered cephalad to caudal: 7 cervical vertebrae (C1-7), 12 thoracic vertebrae (T1-12), 5 lumbar vertebrae (L1-5), 5 vertebrae fused as the sacrum (S1-5), and 4 coccygeal vertebrae.