Leda button moulds

Images used with permission.
Detecting find from Michael:
Kings Crown (1902-1952) Tasmanian Police button
Royal Australian Naval Brigade

Stokes & Sons Melbourne
According to https://www.navy.gov.au/brief-history-royal-australian-naval-reserve the R.A.N.B. was the title of naval reservists from 1917 until 1920, becoming the Royal Australian Naval Volunteer Reserves in 1921.