Dogs perform many roles for people, such as hunting, herding, pulling loads, protection, assisting police and military, companionship, and, more recently, aiding handicapped individuals. This impact on human society has given them the nickname  man's best friend  in the Western world.
When looking to acquire nickels with Silver content, look for Silver War Nickels. The term Silver War Nickels refers to those produced by the United States Mint from mid-1942 to 1945. These nickels differ from those minted before and after World War II, as those were made from 56% copper, 35% Silver and 9% manganese.
25 Most Valuable Nickels (Updated 2018) The CoinTrackers.com crew has compiled an awesome list we've dubbed 25 Most Valuable Nickels, and the page details the most valuable nickels minted in the United States from the late 1800's to the early 2000's. (Updated 2018) The values are descending so the most valuable are at the top. (so its a count up and not a countdown).