Dunno Geoff.
It's usual to have no death reg if there is an inquest.
The Sydney Morning Herald - Tuesday 30 December 1919 p.6
DEATH
GRIMM.-December 28, 1919, at her residence Morangorell, 28 Gilderthorpe-avenue, Randwick, Mary, relict of the late Rev. George Grimm, aged 76 years.
The Sydney Morning Herald - Tuesday 30 December 1919 p.5
FUNERALS
GRIMM.-The Funeral of the late MARY, Widow of the late Rev. GEORGE GRIMM, M.A., will leave the Mortuary Station, Regent-street, city, THIS (Tuesday) MORNING, by 9.28 a.m. train, for Presbyterian Cemetery, Rookwood.
WOOD, COFFILL, and COMPANY, LTD., Belmore-road, Randwick.
Dave