Green’s Dictionary of Slang

(US Und.) a purse or wallet.

c.1640		J. Shirley Captain Underwit II ii: His very fingers cryed ‘give me the gold!’ which presumeing to be weight he put in his hocas pocas, a little dormer under his right skirt.
1933		Ersine Und. and Prison Sl. 44: hocus, n. A pocketbook, leather.
1935		A.J. Pollock Und. Speaks n.p.: Hocus-pocus, a pocketbook.
1950		Goldin et al. DAUL 148/2: Okus. (Chiefly mid-West pickpockets’ jargon) A wallet. ‘Okus in port pratt (left rear trousers pocket.’.
a.1955		D. Maurer ‘Argot of Pickpockets’ Lang. Und. (1981) 243/1: Hocus or hocus-pocus. n. See poke.