Quarter farthing have a purchasing power of between 3p and 4p (£0.03 to £0.04). Quarter farthing The British quarter farthing (d) coin was a unit of currency equaling one sixteenth of a penny ( of a pound sterling). It was produced for circulation in Ceylon in various years between 1839 and 1853, with proof coins being produced in 1868. It is the smallest denomination of pound sterling coin ever minted. The coin is considered to be part of British coinage because it has no indication of what country it was minted for, being made in the same style as the contemporary half-farthing
Mace (unit) which is also a generic word for "money" in Mandarin Chinese. (The same Chinese character (kanji) was used for the Japanese "sen", the former unit equal to of a Japanese yen; the Korean "chŏn"(revised: jeon), the former unit equal to of a Korean won; and for the Vietnamese tiền, a currency used in late imperial Vietnam; although neither of these has ever been known as "mace" in English.) Mace (unit) A mace (; Hong Kong English usage: tsin; Southeast Asian English usage: chee) is a traditional Chinese measurement of weight in East Asia that was also used as a currency