Green’s Dictionary of Slang

hap’orth o’ coppers n.

[rhy. sl.]

(Aus.) habeas corpus.

1895		Crowe Aus. Sl. Dict. 35: Hap’orth o’ Coppers, habeas corpus.
1973		(ref. to 1890s) ‘Gloss. of Larrikin Terms’ in J. Murray Larrikins 203: hap’orth o’ coppers: habeas corpus.