Sir: The guinea was a gold coin that was not minted after 1817, so I do not know how Glenda Cooper got the idea ("Few mourn forgotten days of half-crowns and tanners", 15 February) that it was still in circulation before 1971. Professional fees were priced in guineas. I bought a copy of Jane's Fighting Ships in 1943 for three guineas, but I have never seen a guinea outside of a museum.
The florin was the last of the old coins still circulating. The ones minted for 1947 and 1948 were made of cupro-nickel and bore the king's title of Emperor of India in the abbreviated form of Ind Imp.