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.
Fuljenze said that his company has sold good condition 1964 half-dollar Kennedy coins for around $10 and $12. However, before shelling out $9,000 on a numismatic coin, investors should first decided if the provenance is worth the coin, which Fuljenz said he personally doesnât think is worth it.