well that's all very well and good but alot of that is wrong... Brass threepences were still in circulation in 1971. Sixpences were still in circulation as late as 1980. Shillings were still in circulation theoretically in 1990. Florins were still in circulation in 1993, i know that full well cos i remember spending them right up to the end, i even spent a George V florin in the early 90s, so i know. Halfcrowns were demonetised in 1969. Crowns to my knowledge have not been demonetised, neither have double florins. Infact double florins were deemed legal tender for 20p upon decimalisation and still are. Half sovereigns, Sovereign, £2 and £5 coins (the gold ones with St George) are still legal tender for, 50p, £1, £2 and £5 respectively, and you are well within your rights to spend one as such if you so wished.