It's been a long time but I've been through another 20,000 nickels for a total of 60,000 searched.
In the past 10 boxes, I've filled four holes (1945P, 1951S, 1939D, 1950D) in my album.
I'm still missing 7 to complete the set:
1938S, 1939S
1942P, 1942S, 1943D, 1944D, 1944S
Most interesting find was a 1950D. Very excited to have that one found.
Other interesting finds:
a 1956 proof and 1963 proof both looking nearly brand new.
a double headed nickel
Here are my stats by category after going through 60,000 coins
(I've stopped counting 2009 nickels):
Type Number Rate (1 per X nickels)
War Nickels 21 2857
1938-1939 Nickels 32 1875
1940-1949 Nickels (excluding War Nickels) 265 226
1950-1959 Nickels 428 140
Buffalo nickels (with dates) 5 12000
Buffalo nickels (without dates) 4 15000
Liberty V Nickels 1 60000
TOTAL of Above 756 79
Others
Foreign* 29
U.S. Pennies :( 4
Alladin's Castle token 1
double headed nickel 1
* Panama(1), Canada(23), Switzerland(1), Bahamas(1), UK(2), spain(1)