I have just acquired this stamp in the hope that it was the rare #52 cancel. (Hugh Freeman, in his fantastic book, "The Barred Numerals of Victoria", 2nd ed, 2018, rates the #52 barred numeral as RRRR (4-12 copies)). It should not be confused with the #52 of Launceston. This Tasmanian cancel is common and not hard to find on Victorian stamps.
I found this image as a confirmed example and am more confident I have it right.