Green’s Dictionary of Slang

(Aus./US) a barber.

1924		Mail (Adelaide) 16 Feb. 1/4: I’m goin’ to the Sydney Harbour (barber) and I’ll be back in soda and lime (time) for Deacon Skinner (dinner).
1928		R.J. Tasker Grimhaven 180: I’m heelin’ down to the Sidney [sic] Harbour’s for an ocean wave and a work-out on the bonny fair.
1941		Williamstown Chron. (Vic.) 15 Mar. 2/3: ‘How’s the hair oil going that I sold you recently?’ said the Sydney Harbor.
1950		Sun. Herald (Sydney) 5 Nov. 95/4: ‘Sydney Harbour’ for barber.
1969		S.T. Kendall Up the Frog 30: Dover Harbour – Barber.
1983		R. Aven-Bray Ridgey-Didge Oz Jack Lang 45: Sydney Harbour Barber.
1999		G. Seal Lingo 90: coff’s harbour for barber [...] sydney harbour for barber.
2002		Pete’s Aussie Sl. Home Page 🌐 Coffs Harbour: a barber [...] Sydney Harbour: a barber.