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. 470 BCE toIdentifies the final date in a range assigned in a numismatic context.. 440 BCE
Archaic until 480 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: 7.317.31 g <br />7,310 mg <br />
DenominationTerm indicating the value of a numismatic object. Examples: tetradrachm, chalkous, denarius.: nomos
AxisDescribes the directional relationship between the obverse and reverse of a numismatic object.: 1212 mm <br />1.2 cm <br />
DiameterDescribes diameter of an object (in mm).: 2020 mm <br />2 cm <br />
"area of undertype visible on reverse" (Bob Cutler: I think it was overstruck on a piece from Gela, with a weight reduction of roughly 10%)
References
^Noe, Sydney P. (1927), The coinage of Metapontum. Part 1, Numismatic Notes and Monographs 32, New York.
^Rutter N. Keith et alii (eds.) (2001), Historia Numorum Italy, London, xvi, 223 p., 43 pl.
^Hoover, Oliver D. (2018), The Handbook of Greek Coinage Series, Volume 1. Handbook of Coins of Italy and Magna Graecia, Sixth to First Centuries BC., Lancaster-London, 2018, lxi, 527 pages, 23 cm