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.
From Three Cent Nickels and Shield Nickels worth a minimum of $12 to $18 each in Good condition. Followed by Liberty Nickels, find any of these in a well preserved condition and you have a $20 to $30 coin. Next... Everyone's favorite the Buffalo Nickel, where some of the higher old nickel values are found. Even a heavily circulated Buffalo is worth 40 cents. Discover a 1919-D, 1921-S or a 1926-S Buffalo nickel in your group and the value climbs into the hundreds of dollars for a nice coin.