Wiktionary
brass farthing
n. (context idiomatic English) Something worthless or of small value.
Usage examples of "brass farthing".
Anyone can say that, but no one has yet got any head-money or gun-money out of it - not a brass farthing.
How else do you think she managed, all those years we were growing up, with scarcely two pennies to rub together, and a husband who gambled away every brass farthing he could lay his hands on?
He went inside the cave and in just a moment he was back with a single brass farthing.
He returned to Isleworth without so much as a brass farthing for Mr.