Tetradrammo ibrido¹, Akragas

Descrizione sommaria:
D. AKRAC-ANTOΣ² con leggenda parzialmente retrograda. Al centro, aquila marina³ ad ali chiuse, stante a sinistra.
R. Auriga con pungolo e redini conduce quadriga lenta a destra, cavalli incoronati da una Vittoria alata⁴. Ceto⁵ natante a destra in esergo.

Dalla ricerca nel web ho ricavato i link che seguono, il primi due attinenti a tetradrammi di Akragas,  il terzo attinente ad un tetradrammo di Siracusa, molto simili alla moneta di figura:

1. Getty Museum Title: Tetradrachm. Artist/Maker: Unknown. Culture: Greek (Sicilian). Place: Akragas (Agrigentum), Sicily, Italy (Place created). Date: about 510 - 420 B.C. Medium: Silver, Dimensions: 2.5. Credit Line: Gift of Chester B. Franz. A standing eagle on the front and a crab on the back decorate this four-drachma coin, a tetradrachm. This decoration was typical of the coinage of the city of Akragas for nearly a century, from about 510 to 420 B.C. Colonists from the Greek city of Gela founded Akragas on the south coast of Sicily about 580 B.C. About seventy years later, Akragas, like many other Greek cities, began to issue coins bearing the city's symbols, often animals. In mythology the eagle symbolizes the Greek god Zeus, to whom a large temple was dedicated in Akragas. The white-tailed sea eagle, principally a fish-eater, inhabits the sea coasts and inland waters of Europe and Asia. The crab seems to be a fresh-water variety, probably representing the local river and lake environment. The Greek inscription on the front is a form of the city's name, Akragantos, meaning "of Akragas."
2. http://www.mfa.org/collections/object/tetradrachm-of-akragas-agrigentum-with-eagle-1186 Tetradrachm of Akragas (Agrigentum) with eagle Greek. Classical Period 472–413 B.C. Mint: Akragas (Agrigentum), Sicily Catalogue Raisonné Brett, Greek Coins (MFA), no. 0224. Dimensions Diameter: 23mm. Weight: 17.10gm. Accession Number 18.626. Medium or Technique Silver. Obverse: Eagle standing left, wings closed; ground line ending in volutes, resembling Ionic capital. Inscription in Greek at left. Reverse: Freshwater crab; corn grain below. Round incuse. Credit Line Gift of Mr. and Mrs. William de Forest Thomson.
3. http://www.acsearch.info/search.html?id=2309531 SICILY. Heritage Auctions, Inc. http://coins.ha.com/ Auction 3037 30869 (« | ») 4. January 2015 Estimate 10'000 USD. Result 15'000 USD. Syracuse. Deinomenid Tyranny. Ca. 485-465 BC. AR tetradrachm (27mm, 17.36 gm, 11h). Struck under Hieron I or Thrasybulos, ca. 467- 465 BC. Charioteer, holding kentron in right hand and reins in left, driving slow quadriga right; above, Nike flying to right, crowning horses with open wreath held in both hands; ketos swimming to right in exergue / ΣV-RA-K-OΣIO-N, head of Arethusa right, hair bound in pearl band, wearing loop earring with single pendant and pearl necklace; four dolphins around. HGC 2, 1309. Boehringer 408 (V211/R288). SNG ANS 128. Hunterian 20; Bement 1050 (all from the same dies). Rare. Superbly lustrous metal with light golden toning. NGC MS★ 5/5 - 5/5. From The California Collection.  This issue represents one of the last Syracuse tetradrachms struck under the Deinomenid tyranny. Thrasybulos, younger brother of Hieron I, seized power upon the death of his brother, who had ruled with a firm hand and been a liberal patron of the arts. Thrasybulos showed no such talent for ruling and embarked on a reign of terror, executing many prominent citizens and using their confiscated cash to pay his mercenary army. The citizenry rebelled and sought help from Acragas and Gela, who were happy to provide assistance in return for obtaining freedom from Syracusan domination. Thrasybulos was forced into exile in Locris, the the Syracusans formed a democratic government that lasted for the next six decades. The design of this coin is deliberately archaizing, being closely patterned on much earlier issues of Syracuse.