 | IUKF # 200900-33 | |
| Dojo: Mattson Academy of Uechi-ryu Karate | ||
| Sensei: George E. Mattson | ||
| Country: France | ||
| Current Rank Yondan | Current Title - | Current Master Certifications - |
| Sandan | IUKF | George E. Mattson | 24/06/2023 | |
| Nidan | IUKF | George E. Mattson | 26/06/2021 | |
| Shodan | IUKF | George E. Mattson | 08/06/2019 | |
| Jun Shihan | IUKF | George E. Mattson | 23/06/2019 | |
| Yondan | IUKF | George E. Mattson | 12/07/2025 |   |