zacn.

1898 Bulletin (Sydney) 1 Oct. 14 6d., a ‘zack’.

1924 Truth (Sydney) 27 Apr. 6 Zack, sixpence.

1941 Coast to Coast 213 ‘Only one, then,’ I said. ‘We'll only have one more, so we'll make it a sixpence in.’ ‘Don't worry about the zac,’ said Tom.

1952 M. Tripp Faith is Windsock ii. 29 Arthur spent the break losing bobs and tanners while the tall Australian reckoned his profits in dieners and zaks.

1962 John o' London's 8 Mar. 229/2 And all you get for it is a zack.

1966 Telegraph (Brisbane) 13 Oct. 13/2 The zack, now the 5c piece, is in such demand that very often its scarcity makes one wonder if it is gradually going out of circulation.

1966 P. Mathers Trap ii. 31 Two taps with an improvised hammer and anvil, a two bob and a zac.

1977 Sunday Sun (Brisbane) 1 May 16 When it comes to unique competitions the people of outback Winton reckon they're the full quid—and you can bet your last zac or traybit on it.