A rare 18th-century coin was discovered by a man in the UK while out walking his son’s dog—whose name is Lucky. Last month, Norman Atkinson, 66, stumbled on the George IV 1775 halfpenny while on a public footpath on Highdown Hill in the South Downs. The gardener, of Littlehampton, West Sussex, went on eBay to see how much it was worth after giving it a good clean when he got home. Had the 250-year-old coin been in better condition, he could have sold it for around 300 pounds (approx. US$425), he reckons. But given the wear it has endured, Atkinson has decided to keep it among other bits and bobs Lucky has unearthed over the years. “I was walking through the public footpath where the two fields are and Lucky started scratching around the ground and unearthed it,” Atkinson recounted. “I soaked it in lemon juice when I got home as it …