I still have a lot to learn about aging the old Bears, but didn't serial numbers start with the last digit of the year in 1965-69? If that holds true on the KS as well, then I think 63 or 64. But 63 had bubinga riser with rosewood caps, and 64 as Michigan Bill said was African Bengal wood and rosewood. Are you sure on the shedua? Or is that the same as African Bengal wood?