1-war 47 - 1939<1961 52 - 1964 (not sure why I always gather the 64's, but it always surprises me with how many there are compared to the surrounding dates...)
Between 64P and 64D they made nearly 3 BILLION!!! More than 7 times the mintage of 1963 PandD nickels, and 10 times 1965.
what Petro said lol. It always annoys me going through boxes of nickels and getting a huge amount of 64s and to a lesser extent 63s when I want older ones... lol
I wouldn't save the 64s. Most people don't save any nickels from the 60s (unless they're better condition of course).