Definition of Periosteum. It is a dense fibrous membrane made up of irregular connective tissue that covers the external surface of the bones. It is completely opposite to endosteum that lines the inner cavity of long bones.t mainly comprises of the following two layers: 1  Outer fibrous layer: It is composed of collagen-producing cells called fibroblasts and contains nerve fibers that cause pain when damaged due to the presence of nociceptive nerve endings.
Dealer Says He Doctored Most Valuable Baseball Card Ever Sold. A rare example of the 1909 Honus Wagner baseball card. In 2007, one of them fetched a whopping $2.8 million. A rare example of the 1909 Honus Wagner baseball card. In 2007, one of them fetched a whopping $2.8 million. A judge has rejected a plea agreement from the former head of a sports memorabilia auction house who admitted to using shill bidders to drive up prices and to altering the most valuable baseball card ever sold.
Some of the most valuable Bo Jackson rookie cards and baseball cards are very hard to find in good condition. This is due to bad printing in the factory as well as colored borders. A great example of this is the 1987 Topps Bo Jackson rookie card which is often found very off-center. The 1988 Topps Bo Jackson football rookie card is another great card that is often found off-center. These cards as well as many other make Bo Jackson baseball cards very valuable in Mint 9 condition or better. Here is a list of some of the best Bo Jackson rookie cards of all-time.