Most of the stones in the museum bear a number and are duly catalogued in the inventory. But in the course of time many of the numbers had become more or less illegible, and a few years ago a renumbering was undertaken. It was not however thoroughly completed, and the present situation is not free from some confusion; some of the stones now bear two numbers, an old one in black paint and a new one in red; others stili remain without a number; and in a few cases two stones bear the same number.