Green’s Dictionary of Slang

1. a penny [= win n.].

1859, 1860		Hotten Dict. of Modern Sl. etc.
1864, 1867, 1870		Hotten Sl. Dict.
1873		Sl. Dict.

2. gin.

1909

J. Ware Passing Eng. of the Victorian Era.

3. a win (on a wager).

1935		A.J. Pollock Und. Speaks n.p.: Nose and chin, to win.
1944		Maurer & Baker ‘“Aus.” Rhyming Argot’ in AS XIX:3.
1960		J. Franklyn Dict. of Rhy. Sl.
1972		Dodson & Saczek Dict. of Cockney Rhy. Sl.
1992		R. Puxley Cockney Rabbit.
2002		B. Kirkpatrick Wicked Cockney Rhy. Sl.