(Note: Measurements are outside max. dimensions unless stated otherwise).19th Century : Daisy head petal patera.Diam. 35mm. (1 3/8")Max depth 5.5mm. (3/16")Single central tang on flat reverse.It is recommended that if selecting screw thread option, a pilot hole is drilled and pre-cut with a steel screw of slightly smaller size before screwing in the casting to avoid shearing.