I've been in Scotland since my last blog post and before I fly back to London tomorrow my father has presented me with this ring, which he bought in 1941 on his 21st birthday in a market in Asmara, Eritrea. It's made from melted down silver bullion Maria Theresa thaler coins which were used as currency throughout East Africa during World War II.  It probably didn't cost much to buy, and still wouldn't now, but the story puts its value to me beyond price.