Hi Ameen --
Wow. Super coin! It is a gold aureus from the Roman Empire. I hope your coin is genuine. To find out, compare your coin to the one in my picture and in the description below. Especially compare the weight.
Hess-Divo AG > Auction 336 Auction date: 27 May 2019
Lot number: 170
Price realized: 5,000 CHF (Approx. 4,991 USD / 4,454 EUR / 3,933 GBP)
COINS OF THE ROMAN EMPIRE. OTACILIA SEVERA, wife of Philip I, died AD 249. Aureus, 246-248. AV 4.04 g. MARCIA OTACIL - SEVERA AVG Draped, diademed bust r., hair in four ridges. Rev. PVDICITIA AVG Pudicitia, wearing long dress and veil, seated l. on throne with high back-rest, holding transverse scepter with her l. hand, drawing veil with her r. hand. C. 51; Calicó II, 577, 3268; RIC 83, 123a.
Very rare. Very fine.