The New York Sale, Auction 27, Los 142 The Prospero Collection of Ancient Greek Coins. SICILY. Messana-Zankle (c.500 B.C.), Silver Drachm, 5.44g,. DANKLE , dolphin leaping to left, within sickle-shaped harbour of Messana. Rev. Scallop-shell, within a shallow incuse square containing a pattern of raised and sunken triangles and squares (H. Gielow, ‘Die Silberprägung von Dankle-Messana...