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.

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Reverse: eagle standing left on thunderbolt; ΠTOΛEMAIOY_ΒAΣIΛEΩΣ, P / (ΠAP)
Die Orientation: -
Weight: 12.7 g
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Reverse: ΒΑΣΙΛΕΩΣ ΠΤΟΛΕΜΑΙΟΥ, eagle with closed wings standing to left on thunderbolt; P above monogram to left
Die Orientation: 12 H
Weight: 14.36 g
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Reverse: ΒΑΣΙΛΕΩΣ ΠΤΟΛΕΜΑΙΟΥ, eagle with closed wings standing left on thunderbolt; monogram to left
Die Orientation: 1 H
Weight: 14.25 g
Ex Dr. G.W Collection (Roma Numismatics E-Sale 73; Lot 520)
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Reverse: Athena Alkidemos advancing to right, brandishing spear and holding shield; AΛEΞANΔPOY to left, ΘE in inner left field, Corinthian helmet above ΔI and eagle on thunderbolt in right field
Die Orientation: 1 H
Weight: 15.75 g