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.
The Forgotten Silver Kennedy Half Dollars. Released into circulation in the mid 1960's and 1970, silver Kennedy half dollars represent the end of an era in circulating silver US coins. Additionally, these early halves are significantly more valuable than today's modern half dollars. The opportunity to you is most people don't realize, or remember, they contain a large amount of silver. Let's start with the first year 1964, a very special year. In 1964 the new silver Kennedy half dollars were introduced and contained a hefty 90% silver content. The minimum value is $6.00 each.