Green’s Dictionary of Slang

a dollar.

1850		S.F. Picayune 18 Sept. 4/1: The row wos okkashund by the announsement that the steemers ‘Noo Wurld’ & ‘Hartford’ were going to run to Frisky at from 3 to 5 dolls a tikket [DA].
1858		Norfolk Chron. 6 Nov. 6/6: A great ‘mill’ [...] between two Irish prize-fighters named Morissey and Heenan for 5,000 dols.
1887		M. Roberts Western Avernus (1924) 118: They told me about a horse, which was worth 40 dols.
1889		PMG 14 Aug. n.p.: I see that Sullivan made 21,000 dols. out of his fight, but as he was dead broke before the battle, there won’t be much of if left [F&H].
1889		Music Hall & Theatre Rev. 1 June 10/2: He was hired at 4 dols. a day.
1909		J. Ware Passing Eng. of the Victorian Era.
1920		A. Baer Railroading 9 Aug. [synd. col.] A bull pinches you for loafing. Judge smears you ten smackers. But 10 dolls a minute for standing still is still better than traveling .
1958		(con. 1890s) S.H. Adams Tenderloin 258: I still got that fifty-dol greenie.