What a stunning find – soaking to remove the soil – each raised section is 4mm deep

Not an obvious fixing for a brooch, more like a mount. Nothing so far in my reference books, at a guess Early medieval in date

36.6mm high, 7.16mm thick, 16.17g

Initial ID from the museum is early medieval also.

It appears to be a die for stamping repousse work from my ref books

Weight: 16.17 g
Size: 36.6mm H x 7.16mm T