I believe the date is as follows: Month Day Year, with the letter I included. The year will start over with 1970, 1980, etc.

The first letter is the month:
A - January
B - February
C - March
D - April
E - May
F - June
G - July
H - August
I - September
J - October
K - November
L - December

The next 2 digits are the day:
Day 1-31

The last letter is the year:
A - 1960
B - 1961
C - 1962
D - 1963
E - 1964
F - 1965
G - 1966
H - 1967
I - 1968
J - 1969


So a fan with an A8J is January 8, 1969 (Wednesday). The one in the picture below is F18J or June 18, 1969 (Wednesday). F10A = June 10, 1970 (Wednesday) in the previous post.

This is what I have been told by several "experts". If it is not correct, please post the proper definition of the code.

Hope this helps.

D