The masters and their ranks

I have been doing a bit of research and was surprised by what I have found so far, this is by no means a complete list, but here we can see several well known master's and their ranks and ages.

The Okinawa Karate Federation was formed in 1956.

In 1958 the first Dan grades were issued;

9^th Dan Hanshi to Seiko Higa at age 60

9^th Dan Hanshi to Kanei Uechi at age 47

8^th Dan Kyoshi to Meitou Yagi at age 46

8^th Dan Kyoshi to Eiichi Miyazato at a 36

8^th Dan Kyoshi to Seikichi Toguchi at age 41

8^th Dan Kyoshi to Shoshin Nagamine at age 51

8^th Dan Kyoshi to Tatsuo Shimabukuro at age 50

Promotions in 1962;

8^th Dan to Katsuya Miyahara at age 44

8^th Dan to Shuguro Nakazato at age 43

Promotions in 1963;

9^th Dan to Joen Nakazato at age  42

Promotions in 1967;

             10^th Dan Hanshi to Kanei Uechi at age 56

9^th Dan to Katsuya Miyahara at age 49

9^th Dan to Shuguro Nakazato at age 48

Promotions in 1968:

7^th Dan to Tadashi Yamashita at age 26

Promotions in 1969;

10^th Dan to Katsuya Miyahara at age 51

10^th Dan to Shuguro Nakazato at age 50

 Although they were not OKF promotions, it might also be of interest to you that the following promotion were also made;

           10^th Dan to Eizo Shimabuku in 1959 at age 39

            9^th Dan to Rober Trias in 1964 at the age of 41

I find this very interesting and will keep researching it.

For part two: http://yushikan.blogspot.com/2014/01/how-masters-got-their-rank-part-2.html