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.
5. Spinal cavity: This is the space that surrounds the spinal column or backbones. This is located in the posterior section of the body. It contains the spinal cord, the spinal column, which is a long row of bones from the neck to the tailbone.These individual bones are called vertebra.The tissue in between are called disk, or disc, which are made up of cartilage.his is located in the posterior section of the body. It contains the spinal cord, the spinal column, which is a long row of bones from the neck to the tailbone. These individual bones are called vertebra. The tissue in between are called disk, or disc, which are made up of cartilage.