Green’s Dictionary of Slang

(Aus.) a wallet.

1904		‘Dryblower’ ‘Thy Will Be Done’ in Sun. Times (Perth) 3 Jan. 12/1: The old dryblower who said he was hocussed and robbed of his ‘shammy’.
1905		Sun. Times (Perth) 23 July 4/7: If ’is claim turned out a duffer, an’ of ‘dust’ ’e ’ad a lack, / Then the ‘shammy’ held by Jim was always passed across to Jack.