Ptolemy I - Basileus of Ptolemaïkḕ Basileía from 305 BC to 283/2 BC
Ptolemaios I - also known as Ptolemy of Lagus - was a Macedonian Greek general under Alexander the Great, one of the three Diadochi who succeeded to his empire.

Ptolemy became ruler of Egypt and founded a dynasty which ruled it for the next three centuries, turning Egypt into a Hellenistic kingdom and Alexandria into a center of Greek culture.

He assimilated some aspects of Egyptian culture, however, assuming the traditional title pharaoh in 305/4 BC. The use of the title of pharaoh was often situational: pharaoh was used for an Egyptian audience, and Basileus for a Greek audience, as exemplified by Egyptian coinage.

Ptolemy I Soter died in winter 283 or spring 282 at the age of 84.
Ptolemy I
King Ptolemy I "the Saviour" of the Ptolemaic Kingdom

Epithet: Soter ("the Saviour")

(1) Ptolemy I 300-285 BC
Obverse: diademed head with Aegis right Δ (behind ear)
Reverse: eagle standing left on thunderbolt; ΠTOΛEMAIOY_ΒAΣIΛEΩΣ, P / (ΠAP)
Ref: Svoronos 255; SNG Cop 70 - 71; Noes...
(2) Ptolemy I c. 305-283 BC
Obverse: Diademed head of Ptolemy I right, wearing aegis around neck, tiny Δ behind ear
Reverse: ΒΑΣΙΛΕΩΣ ΠΤΟΛΕΜΑΙΟΥ, eagle standing left on thunderbolt, P above monogram to left
Ref: Svoronos 255; SNG Copenhagen 70