This was in some of my Dad's military items that he had from WWII. A loose translation of the Asian (Japanese & Chinese) given to me by a Japanese friend. Big time hunter or Hunting big time. The reverse has no markings or inscriptions.
The pin has a screw back.
It is a hunting license badge from 1929. A very rare piece indeed!
Actually, being pre-WWII it would read from right to left. Not sure why it has the english word "Hunter" on it. Although by the late 20's Japan was beginning to take on some Western ways.