If your pulse has not returned to its morning resting rate one hour later, you are still having an allergic reaction to the food you ate previously and cannot get a decent result on another food until either your pulse slows again or until the next morning.
CoinTrackers.com has estimated the 1964 Lincoln Penny value at an average of 1 cent, one in certified mint state (MS+) could be worth $12. (see details)...
Here we have a beautiful 1964 toned silver Kennedy half dollar. Although the grade seems a little high because of a nick in the field, the toning makes up for it. A true MS-67 is listed in Coin World's Coin Values at $450.00 Dollars.