Be careful buying coins on ebay, friends - there are some awfully convincing fakes out there and we've all bought at least one. When in doubt, check the Fake Coins database at ForumAncientCoins.com or ask the nice folks at reddit.com/r/ancientcoins, they're a helpful bunch and got me started in numismatics.
Authority: Ptolemy III Euergetes
Date: 244-243 BCE
Mint: Tyre, Phoenicia
Denomination: Tetradrachm
Material: Silver
Obverse: Diademed Head of Ptolemy I right, aegis tied around neck, dotted border
Reverse: Eagle with closed wings standing left on thunderbolt, dotted border
- Symbol (Left field): Lorber Monogram 237 symbol, consists of Τ and Υ (Tyre), above club
- Symbol (Exergue): Lorber Monogram 104 symbol, consists of Θ
- Symbol (Right field): Δ (above) / Ι (below)
Diameter: 25.91 mm
Weight: 14.11 g
Reference: Svoronos 1019
See: https://numismatics.org/pco/id/cpe.1_1.842?lang=en