Copper-alloy, 8.07 grams, 31.32 mm. Circa 1st century AD. Of cast circular openwork form, with five curved arms or spokes; With the pin plate and catchplate to the reverse but lacking the original iron pin. Reference: Richard Hattatt Brooches of Antiquity, page 161, figure 52, for similar examples. An excellent brooch, with attractive, even patina.