Gold Solidus of Constantine I
Dates 310 - 313
Unit - Solidus
Mint - Augusta Treverorum / Treveri, modern-day Trier, Germany.
Obverse: Constantınvs P F avg: Head of Constantine I, laureate, right
Reverse: S P Q R OPTIMO PRINCIPI: Legionary Eagle, Standing Left; To Left, Standard Surmounted by Hand; To Right, Standard Surmounted by Wreath