Green’s Dictionary of Slang

(Irish) a large quantity.

1955		J.P. Donleavy Ginger Man (1958) 305: I’ve got to get a farm as soon as I lay my hands on some quids. Only way to live. Make pucks of money.
1965		L. Dunne Goodbye to The Hill (1966) 191: Like the two pound you gave me when you told that cock-and-bull story about the suit that you brought back from your holiday, and you with pucks of money in your pocket.