Coins from Eastern Celts
Gallic groups, originating from the various La Tène chiefdoms, began a southeastern movement into the Balkan peninsula from the 4th century BC. Although Celtic settlements were concentrated in the western half of the Carpathian Basin, there were notable incursions, and settlements, within the Balkan Peninsula itself.

From their new bases in northern Illyria and Pannonia, the Gallic invasions climaxed in the early 3rd century BC, with the invasion of Greece. The 279 BC invasion of Greece proper was preceded by a series of other military campaigns waged toward the southern Balkans and against the kingdom of Macedonia.

A part of the invasion crossed over to Anatolia and eventually settled in the area that came to be named after them, Galatia.

Eastern Celts

(1) Eastern Celts 2nd - 1st cent
AR Tetradrachm Lower Danube | Moesia | Thrace
Obverse: Stylized wreathed head of Dionysos right
Reverse: Stylized Herakles standing facing, head left, holding club, with lion skin draped over arm; H in inner right field
Ref: Lanz 961-4; Göbl, OTA Class II; cf....
(2) Eastern Celts | Alexander III 300-100 BC
AR Didrachm Unknown mint
Obverse: head of young Herakles right, wearing lion's skin
Reverse: Zeus seated left, leaning on scepter, holding eagle (goose)?; crescent left, AΛEΞANΔPOY (ΔIP) ?
Ref: Price B 40 (Var.) - Imitation Pric...
(3) Eastern Celts | Demetrius I Poliorketes 150-50? BC
AR Diobol Unknown mint
Obverse: diademed head right
Reverse: cornucopiae IMBA?
Ref: None provided
(4) Lower Danube region 120-10 BC
AR Tetradrachm Unknown mint
Obverse: head of young Dionysos right with ivy wreath
Reverse: nude Heracles left holding club, lion skin over shoulder; HPAKΛEOYΣ / ΣΩTHPOΣ, M / ΘAΣIΩN
Ref: Prokopov, Silberprägung group XII; ...
(5) Lower Danube region c. 120-10 BC
AR Tetradrachm Unknown mint
Obverse: head of young Dionysos right with ivy wreath
Reverse: nude Heracles facing holding club, lion skin over shoulder illegible lugend (HPAKΛEOYΣ / ΣΩTHPOΣ / ΘAΣIΩN)
Ref: Dembski 1524-1525; OTA Class IV.
(6) Scordisci ~300-0 BC
AR Drachm Unknown mint
Obverse: Head with point-eyes, ball-cheeks, neckbeard, and moon-shaped ear facing right, wearing a laurel-wreath.
Reverse: Horse to the left, circle above (mostly off flan)
Ref: Kostial 506
(7) Serdi 168-31 BC
AE unit Unknown mint
Obverse: Head of rivergod Strymon right
Reverse: Wide trident
Ref: type: (A?)5B; imitation of: SNG Cop...
(8) Serdi 168-31 BC
AE unit Unknown mint
Obverse: Head of rivergod Strymon right
Reverse: Wide trident; MAKE / ?ΔONΩN?
Ref: type E3A, imitation of: SNG Copenha...