I found this one on the Norwegian Metal Detectorists’ Museum site — a Merovingian-era gilded copper alloy oval brooch from the 700s, found in Hedmark, Norway. It’s described as a stylized reptile. I think it looks like a pill bug. Either way, I liked it and had to make one.

Mine is a small bronze version, lost-wax cast. The original is 35mm × 20mm and mine is approximately the same size.

The original: nmf.nu/museum – Skålfibel Krypdyrspenne