AuthorityIdentifies the issuing power. The authority can be "pretended" when the name or the portrait of X is on the coin but he/she was not the issuing power. It can also be "uncertain" when there is no mention of X on the coin but he/she was the issuing power according to the historical sources:
FromIdentifies the initial date in a range assigned in a numismatic context. 250 BCE toIdentifies the final date in a range assigned in a numismatic context.. 220 BCE
Hellenistic 323-30 BCperiodTime period of the numismatic object.
Physical description
MetalThe physical material (usually metal) from which an object is made.: Bronze
WeightWeight of the numismatic object (in grams).in grams: 7.197.19 g <br />7,190 mg <br />
DenominationTerm indicating the value of a numismatic object. Examples: tetradrachm, chalkous, denarius.: hemiobol
AxisDescribes the directional relationship between the obverse and reverse of a numismatic object.: 33 mm <br />0.3 cm <br />
DiameterDescribes diameter of an object (in mm).: 2323 mm <br />2.3 cm <br />
FromIdentifies the initial date in a range assigned in a numismatic context. 246 BCE toIdentifies the final date in a range assigned in a numismatic context.. 221 BCE
Hellenistic 323-30 BCperiodTime period of the numismatic object.
Physical description
DenominationTerm indicating the value of a numismatic object. Examples: tetradrachm, chalkous, denarius.ᵖ:
"for undertype: Svoronos 871; SNG Copenhagen 442; Köln 65. 7.19g, 23mm, 3h. The undertype obverse, featuring a portrait of Ptolemy I facing right, is almost entirely obliterated beneath the head of Zeus-Ammon from the overtype: both are aligned on the same axis. More obvious is the personification of Libya of the reverse undertype (this time on an axis 90° anticlockwise of the overtype) and the legend BAΣIΛEΩΣ ΠTOΛEMAIOY around it"
References
^Robinson, E. S. G. (1927), A Catalogue of the Greek coins in the British Museum, vol. XXIX : Cyrenaica, London, The Trustees, p. 154, pl. 47.
^Svoronos, Ioannes N. (1904-1908), Τὰ νομίσματα τοῦ κράτους τῶν Πτολεμαίων (Ta nomismata tou kratous tōn Ptolemaiōn - The coins of the Ptolemaic rulers), Athens, 4 v., 68 pl.
^Lorber, Catharine C. (2018), Coins of the Ptolemaic empire : Part I. Ptolemy I through Ptolemy IV, 2 vol., New York.