Lachlan Park Hospital Brass Buttons- Willow Court

Today I was given 3 Lachlan Park Hospital brass buttons someone found in a charity shop for a ridiculously low price.

The buttons would date to the late 1930s.

The buttons were made by Stokes & Sons Melb.

The lady has a few other buttons she is keeping hold for now that has (mental hospital) on them which should indicate that it's older than this set.

Do you know the types of staff who would have wore these on their uniform? Be great if someone had photo.