barney dillon, n. — Green’s Dictionary of Slang

barney dillon n.

[rhy. sl.]

(Irish/Scot.) a shilling (5p).

1935		Daily Tel. 8 Nov. cited in Franklyn (1960).
1960		J. Franklyn Dict. of Rhy. Sl.
1972		Dodson & Saczek Dict. of Cockney Rhy. Sl.
2002		Blue Pages (Dublin) ‘Dublin Dictionary’ 🌐 Barney Dillons Shillin’s, shekels, moolah, money.