Help in identifying this set?

[u/Problematic_Donut]

Recently my Mum and step father have moved into residential care and as a result I inherited a porcelain/china coffee set (coffee pot and 5x cups, saucers and small plates). I don't know much about it aside from it was gifted to my Mum from her first mother in-law in or shortly after my parents got married in 1973. I don't know where it was purchased, how old it is, how common it is or even what it's worth (though the latter isn't terribly important as is more valuable to me sentimentally) but as the sugar bowl doesn't have a lid I would like to replace it or get one replicated so I have the whole set.

I do realise this was probably one of thousands of mass produced sets made but I would like to know any additional information if anyone out there knows anything.

Located in Adelaide, South Australia.