Sentence:  On whatever point Jane's eyes rested, through whichever line her gaze ran, she saw cheques being signed, credit-card counterfoils being scrawled across, standing orders being arranged, and cash – wholesome dosh, ponies, monkies, <WSD>oncers</WSD>, coins of the realm – flowing around like mercury, like some element. 
Meaning of the word marked with <WSD> tags:  A one-pound note.