It's estimated that in 200 A.D. the worldwide human population was about 257 million.
RS60446. Silver denarius, RIC IV 351b, RSC III 573a, BMCRE V 703, nice VF, weight 2.786 g, maximum diameter 18.1 mm, die axis 0o, Laodicea ad Mare (Latakia, Syria) mint, 199 A.D.; obverse ANTONINVS AVGVSTVS, laureate and draped older boy's bust right, from behind; reverse SECVRIT ORBIS, Securitas seated left, scepter vertical in right, propping head on left hand, left elbow on back of throne; scarce; $130.00 (€97.50)
Septimius Severus, 9 April 193 - 4 February 211 A.D.
Emesa was famous for its Temple of the Sun, the center of worship for the Syrian sun god El-Gebal (or Elagabal), worshipped in the form of a conical black stone. In 187, Septimius Severus married Julia Domna, age 17, the youngest daughter of the high-priest Julius Bassianus and a Syrian princess from the Royal House of Emesa.
RS68055. Silver denarius, RIC IV 431, Cohen 771, VF, lamination flaws and corrosion on reverse, weight 2.189 g, maximum diameter 18.7 mm, die axis 315o, Emesa (Homs) mint, 194 - 195 A.D.; obverse IMP CAE L SEP SEV PERT AVG COS II, laureate head right; reverseVIRTVTE AVG, Virtus advancing right, wearing military garb, inverted spear in right hand, parazonium in left; scarce; $110.00 (€82.50)
Julia Domna, Augusta 194 - 8 April 217 A.D.
Julia Domna, was from Emesa. She was the youngest daughter of high-priest Julius Bassianus, a descendant of the Royal House of Emesa.
RS49580. Silver denarius, RIC IV 627 var (reverselegend), SRCV II 6591 var (same), F, weight 2.695 g, maximum diameter 16.9 mm, die axis 0o, Emesa (Homs, Syria) mint, 194 - 195 A.D.; obverse IVLIA DOMNA AVG, draped bust right; reverseLIBER AVG, Liberalitas standing left, counting board in right, cornucopia in left; very rare; $85.00 (€63.75)
Philip I the Arab, February 244 - End of September 249 A.D.
Felicitas was the goddess or personification of good luck and success. She played an important role in Rome's state religion during the empire, and was frequently portrayed on coins. She became a prominent symbol of the wealth and prosperity of the Roman Empire.
RS41865. Silver antoninianus, SRCV III 8950, RIC IV 78, RSC IV 155, VF, horn silver, tight crack, weight 3.315 g, maximum diameter 23.7 mm, die axis 180o, Antioch mint, 249 A.D.; obverse IMP M IVL PHILIPPVS AVG, radiate, draped and cuirassedbust right; reverseP M TR P VI COS P P, Felicitas standing left, long caduceus in right, cornucopia in left; from the Jyrki Muona Collection; rare; $50.00 (€37.50)