Ok first of all it has two different coins ..... Canadian five cent and U.S nickel, before the buffalo there was a different nickel those first two pictures are of the second version of the US nickel which was before the buffalo nickel and then came the Thomas Jefferson nickel. Before all of those it was a shield nickel. Here is the info -----------
The initial design of the Shield nickel was struck until 1883, then replaced by the Liberty Head nickel. The Buffalo nickel was introduced in 1913 as part of a drive to increase the beauty of American coinage; in 1938, the Jefferson nickel followed. In 2004 and 2005, special designs in honor of the bicentennial of the Lewis and Clark Expedition were issued. In 2006, the Mint reverted to using Jefferson nickel designer Felix Schlag's original reverse (or "tails" side), although a new obverse, by Jamie Franki, was substituted. As of 2013, it costs more than eleven cents to produce a nickel; the Mint is exploring the possibility of reducing cost by using less expensive metals.