Green’s Dictionary of Slang

curle n.

also curl
[the slivers of metal curled as they were clipped]

clippings from money.

[UK]B.E. Dict. Canting Crew.
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.
[UK]Flash Dict. in Sinks of London Laid Open 104: Curl, clippings of money.