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.
Half dollar. The term Half dollar may refer to a half-unit of several currencies that are named dollar. Normally, $1 is divided into 100 cents, so a half dollar is equal to 50 cents. Coins and/or banknotes of that amount are as such denominated at a value of 50 cents. More than a dozen countries are known to have their own unique dollar currency, out of these not all use the 50 cent piece or half dollar.