I reckon it was probably involved in a crime,bank job,murder. My local cop at the time the most vacant Const Fred Burns had the smarts of a robotic echidna and was sitting at mine with a cuppa and I showed him the gun,suggested it was buried because of a crime and he looked me in the eye and said 'fascinating'. One never knows way back when the gun was working that perhaps a crime had been committed using the gun. I really thought that a fair dinkum copper would have delved into gun ID and crimes of the time...not so fascinating Freddy ****er couldn't care a ****.
It might be the answer to an unsolved mystery,**** it may have fallen out of Amelia Earhardt's plane.