Mesembria, Thrace. 400-350 BC. AR Diobol, 1.31 g. Obv: Corinthian helmet facing, N-I below Rev: META within wheel. SNG BMC 270 var (letters beneath helmet); cf SNG Cop 652; cf BMC 2. 200 SFr. Courtesy of Tkalec Auctions, Switzerland, May 2010.