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:
Chronology
FromIdentifies the initial date in a range assigned in a numismatic context. 176 BCE toIdentifies the final date in a range assigned in a numismatic context.. 142 BCE
Hellenistic 323-30 BCperiodTime period of the numismatic object.
Physical description
MetalThe physical material (usually metal) from which an object is made.: Silver
WeightWeight of the numismatic object (in grams).in grams: 16.8216.82 g <br />16,820 mg <br />
DenominationTerm indicating the value of a numismatic object. Examples: tetradrachm, chalkous, denarius.: tetradrachm
"Portraits of Prusias II (ca. 182-149) and Nikomedes II (149-ca. 127) [...] corresponds both in position and outline to the trace preserved on the Athenian reverse" (nb: not really visible; the shape of the nose on the obverse excludes most of the royal Hellenistic portraits)