£ - pound; gold coin, also called sovereign. (The capital L or £ came from the Latin word 'libra' meaning a pound weight.) A pound was worth 20 shillings or 240 pence. S - shilling; silver coin worth 12 pence. d - penny; copper coin. (The d was the initial letter of 'denarius', a small coin in Roman times). _ - Halfpenny; small copper coin. _ - farthing; very small, worth a quarter of penny. Gn - guinea; gold coin worth 21 shillings.