By Dr. Mercola. Vitamin B12 is fittingly known as the energy vitamin, and your body requires it for a number of vital functions. Among them: energy production, blood formation, DNA synthesis, and myelin formation. Myelin is insulation that protects your nerve endings and allows them to communicate with one another.
Values for most Kennedy half dollars are cheap, except for the prices of couple scarce coins and error coins, of which there many. 1  The 1970-D Kennedy half dollar is the scarcest, worth about $20 in typical uncirculated grades. 2  The 1998-S silver matte finish Kennedy half dollar is worth $500.
Surprising Half Dollar Value. Yes, your half dollar value is trending upwards. Collector demand is driving values higher and all old half dollars minted before 1965, because of silver, are worth $6.73 each. Examine your halves closely and you are sure to find, many are more valuable. Collectors and dealers determine value by these four factors...