Farthing

A British coin of minimum value, withdrawn from circulation in 1960 (294), it was worth a quarter of a penny (under the old system). “Farthing” means one fourth (56). Bosdêt (43) states that gilding a farthing was a common method of deceiving foreigners and drunks since, if well done, it could easily pass for half a sovereign.

Context: 
Gild the farthing if you will
Opera: 
Act: 
Act II