A little archaeological conundrum found its solution this morning. At an excavation in Motala in the early 00s, colleagues of mine found a cupped piece of hard, greyish brown material with a distinctly patterned inside. They interpreted it as a piece of a lost-wax casting mould and suggested in a 2004 publication that it was for a Viking Period tortoise brooch. I've never seen the find live, but I could tell from the pictures that the pattern was certainly not from the Viking Period. I wrote in my 2011 book about the area (p.