Lot Essay
Item one: the type is a well-known early Roman form, but they are generally more substantial than this piece. For a similar thin sheet example from Mentana, see Stefanelli, pl. 21.2; also, cf. Marshall, no. 2310, p. 269, pl. XLVII; Walters, p. 67 "The bulla is an Etruscan ornament in general use from the 5th Century B.C. onwards, later adopted by the Romans."