Didinium is a voracious hunter of live food, namely Paramecium. It is found quite commonly in freshwater habitats such as ponds and other still waters. It is in constant motion, swimming around in search of prey.
1938 S Jefferson Nickel. CoinTrackers.com has estimated the 1938 S Jefferson Nickel value at an average of $3, one in certified mint state (MS+) could be worth $50.(see details)...umismatic Value: $3 to $50.00. Value: As a rough estimate of this coins value you can assume this coin in average condition will be valued at somewhere around $3, while one in certified mint state (MS+) condition could bring as much as $50 at auction.
(1938-2017) With an exception of the War Nickels 1942-1945 (56% copper, 35% silver, and 9% manganese minted during World War II) it has always contained 75% copper and 25% nickel. The nickel is one of the most valuable coins minted in terms of its actual intrinsic metal value. At the time this article was written the coin is worth .07 or .08 each. Because of this there is a melt ban in place on nickels to prevent people from buying thousands of dollars worth of these coins, and melting them down for a hefty profit. The Jefferson nickel is 21.21 mm in diameter and weighs 5 g. Since it has always lacked much intrinsic value it does not have a reeded edge like other white metalic coins, and thus there is no reason for persons to scrape it's metal edges for shavings.