Circular, over 1” diameter with recessed edge and radial grooves one side. The other with foliate motif. Surface lightly worn and textured from burial. Worn in numbers on the surface of the jerkin, these small metal brooches provided a measure of protection against sword cuts and, in fact, were a form of armor. See current Public Television programming for documentation of these in action. As protectors, they also held spiritual significance for the warrior. Professionally refurbished with the silver overlay restored and suspended from a premium polished leather neck cord. Gift boxed with certificate of authenticity. Rare form.