I found the book, Sigi, in case there's something I should look up.
I'm posting a little additional info on Buffalo nickels at the end of their circulating careers--one of my Italian friends had been surprised by hearing they were still circulating in the 1960s.
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Here’s well-known numismatist Q. David Bowers in his 2008 book
Grading Coins By Photographs: “Buffalo nickels became widely popular to collect beginning about 1935, when cardboard panes and pages became popular…Collectors sought Buffalo nickels from circulation until the 1960s, after which most were gone.”
By 1964—66 in the middle of the U.S., the Buffalo nickels I saw were mostly dateless (worn off in circulation), but there were still a number of full-date coins from 1935-1937 in circulation.
1936 was by far the most common. A couple of 1934’s were special finds (for me, a kid). And I did find a single full-date 1930. Two- and three-digit dates from the mid- to late-1920s could also occasionally be found.
These were almost all Philadelphia strikes, of course—mintmarked Buffs were very scarce in circulation. I did, however, think it was a little strange that I never encountered a 1938d—the last of the Buffaloes. (But later I learned of their relatively small mintage.)
We moved to Italia later in 1966, and remained until late 1969. By then Buffalo nickels—even the dateless ones—had disappeared from circulation.
So then I started looking for the silver nickels of 1942-45!

v.