ancient Roman coin Emperor Constantine I, 307-337 CE Obverse: Profile of Emperor Constantine facing right; (IMP CONSTANTIVS FEL AVG). Reverse: Sun god Sol standing holding globe; SOL IN(VICTO COMITI). This coin weighs 1.9 grams and has a diameter of 1.7 cm. This photo is of the actual Treewalk coin for sale, not a substitute. Vendor Certificate of Authenticity guarantees vendor will repurchase coin at full sale price at any time during one year following purchase.