Back in the year 2014, I made an inquiry to NGC Support about the grading/encapsulation of medals listed in their listed numismatic bibliography titled Hawaiian Money, 2nd Edition, by Medcalf and Russell. My "coin club" medals were rejected (see images).
I now see that Hawaii related coin club medals (Maui coin Club and Hawaii State Numismatic Association (HSNA))are now being graded! (see image below)
I made this video about a year ago related to my completed Maui Coin Club silver medal set. Enjoy!