Help with Harvey School Pottery Identification

Hi Everyone, I purchased these 2 pieces recently and were told they were Harvey School.  Both pieces are signed R.E.R. The jug includes the number 12.36 and the pot includes the number 9.45 - I'm guessing that's Dec 1936 and Sept 1945? The only information I could find is a reference to a piece of Harvey School pottery in one of my antique reference books that notes it is signed by R.E.R - but who is R.E.R?  I'm hoping one of the eBay Australian pottery experts can shed some light on this.

 

Wishing everyone a Merry Christmas and safe and happy New Year!