Green’s Dictionary of Slang

(US black/Harlem) a dime.

1936		D. Burley in Chicago Defender 20 June 10: dictionary changes: ‘Demon’ — A dime.
1944		D. Burley Orig. Hbk of Harlem Jive 12: All the stud’s laying down is a deuce of demons.
1960, 1975		Wentworth & Flexner DAS.