John - You ask a very good question about Bear serial numbers.
There are some patterns to the madness of Bear's Grayling serial numbers for certain years, but the patterns change, sometimes just into the year and other times in the middle of the year or at the end of the year.
In 1959 there was a serial number pattern that was established after production got rolling that apparently continued into at least part of 1960...
If you check down toward the bottom of the first page of the thread….
Bear Kodiak Specials 1955-1967 Identification Guide
http://tradgang.com/noncgi/ultimatebb.php?ubb=get_topic;f=14;t=002059#000000 You will see in this pattern, the first letter designated the model of the bow and its length e.g.,
1959 62" Kodiak Special = V
1959 64" Kodiak Special = W
1959 66" Kodiak Special = X
1959 68" Kodiak Special = Y
1959 70" Kodiak Special = Z
Note again, there are exceptions clearly shown on the Kodiak Special Identification Thread which proves the point that in some instances, serial numbers can be as unreliable as using coins for dating Bear bows.
The second letter designated the order of the run that the bow was produced.
The three numbers designated the order within the run that the bow was produced.
WA001 would continue to WA999 then WB001 would run to WB999, etc...
For the 1960 model year, the design of Kodiak Deluxe bows shown above were produced and the designation for the different lengths of those bows were...
56" Kodiak Deluxe = H
60" Kodiak Deluxe = I
64" Kodiak Deluxe = L
During this period each model and length of Bear Bow that I am familiar with had its own single letter designation that was the first letter of its serial number.
At some point in 1960, this nice neat little letter/number scheme was turned upside down and inside out.