As the growing popularity of metal detecting as a hobby meant that more historical objects were being found, museums have missed out on items of archaeological significance that did not fall within the law’s definition, including Bronze Age axes, Iron Age caldrons, and medieval weapons and jewelry. In 2017, 1,267 pieces went through the process in which a committee determines whether an item should be considered a treasure, up from 79 pieces in 1997. – The New York Times