What all coins had silver 1964 and back. Has there been a silver nickel or any siver content in older nickels. Is so whats the last year?
From 1942 to 1945 Jefferson Nickelers were 35% silver. You can easily identify them, aside from the date and difference in appearance, by the fact that they feature a large mint mark above Monticello on the reverse - even for those coins minted at Philadelphia.
Silver coins are as follows. 3 cent silver coins Half dimes Dimes Twenty Cent Quarters Halves Dollars
... and not to forget the 40% silver of the clad Kennedy Half Dollars of 1965-1970... or the many silver Proof issues since 1964, such as the Eisenhower Dollar and nominally circulating silver clad Ikes of the Bicentennial 1976. ... and the assumption, is that the topic is US Coins. Canada continued silver coinage in .800 fine to 1966 and then dropped it to .500 fine for several years before abandoning silver entirely. Switzerland likewise continued its .800(?) fine silver coins until 1968, I believe... and so on... You can find silver coins from the Netherlands, the United Kingdom, Germany, and many other nations for prices competitive with US silver from pre-1964. Note that many of these issues are less than .900 fine. The Latin Monetary Union included over 20 nations. Centered on France, Switzerland, Belgium, and Italy, it included Romania and Columbia eventually. LMU coinage was only .800 fine. On the other hand, British silver was sterling until after World War I when it dropped to .500 fine before being discontinued for base metals.
