The Sestertius denomination
The Sestertius was an ancient Roman coin. During the Roman Republic it was a small, silver coin issued only on rare occasions. During the Roman Empire it was a large brass coin.

The name sestertius means "two and one half", referring to its nominal value of two and a half asses, a value that was useful for commerce because it was one quarter of a denarius, a coin worth ten asses. The name is derived from semis, "half" and "tertius", "third", in which "third" refers to the third as: the sestertius was worth two full asses and half of a third.

The brass sestertius typically weighs in the region of 25 to 28 grammes, is around 32–34 mm in diameter and about 4 mm thick.

Sestertii continued to be struck until the late 3rd century, although there was a marked deterioration in the quality of the metal used and the striking even though portraiture remained strong.
Sestertius

(1) Antoninus Pius 143-144 AD
Obverse: ANTONINVS AVG PIVS P P TR P COS III, Head of Antoninus facing right, wearing laurel wreath
Reverse: IMPERATOR II, Winged victory facing right, holding trophy in both hands; SC in fields
Ref: RIC III Antoninus Pius 717a
(2) Antoninus Pius 140-144 AD
Obverse: ANTONINVS AVG PIVS P P TR P COS III, Head of Antoninus facing right, wearing laurel wreath
Reverse: IVNONI SISPITAE, Juno Sospita walking right, wearing goatskin, preceded by serpent on ground, brandishing spear and holding long shield; SC in fields
Ref: RIC III Antoninus Pius 608
(3) Antoninus Pius 138-161 A.D.
Obverse: ANTONINVS AVG PIVS PP IMP II, laureate head right
Reverse: TR POT XXI COS IIII, Roma seated left on cuirass, foot on helmet, holding Victory and parazonium; shield behind. S-C in exergue.
Ref: RIC III 979a
(4) Antoninus Pius 147 AD
Obverse: laureate and draped bust right seen from behind; ANTONINVS__AVG PIVS P P TR P
Reverse: Pax holding cornucopia set weapons on fire; COS__II_II / PAX_AVG / S C
Ref: RIC 777; Cohen 594
(5) Antoninus Pius 140 AD
Obverse: laureate head right; ANTONINVS AVG PI_VS P P TR P COS III
Reverse: Apollo standing left holding lyre and patera; APOLLI_NI__AVGVSTO / S C
Ref: RIC III 598, Cohen 62
(6) Augustus 15 BC
Obverse: corona civica, two laurel branches around; OB / CIVES / SERVATOS
Reverse: legend around S C; •CN•PIƧO•C N F•III VIR•A•A•F•F
Ref: RIC I 380 (R2), BMCRE I 139, Cohen ...
(7) Claudius 42 AD
Obverse: laureate head right; TI CLAVDIVS CAESAR AVG P M TR P IMP P P
Reverse: legend within corona civica; EX S C / P P / OB CIVES / SERVATOS
Ref: RIC I 112, BMCRE I 185, Cohen 38, S...
(8) Clodius Albinus 193 – 195 AD
Obverse: D CL SEPT ALBIN CAES / bare head right
Reverse: FORT REDVCI COS II / Fortuna seated left, holding rudder & cornucopiae, wheel beneath chair.
Ref: RIC 53
(9) Commodus 190 AD
Obverse: Laureate head right
Reverse: Libertas standing facing, head left, holding pileus and rod.
Ref: RIC III 562; MIR 18, 798-6/30; Bant...
(10) Commodus 181 A.D.
Obverse: M COMMODVS ANTONINVS AVG, laureate head right
Reverse: FEL AVG TR P VI IMP IIII COS III P P, Felicitas standing left holding scepter & caduceus.
Ref: RIC 308b
(11) Commodus AD 181
Obverse: M COMMODVS ANTONINVS AVG, laureate head right
Reverse: IVPPITER CONSERVATOR TR P VI IMP IIII COS III P P, Jupiter standing left, extending thunderbolt and cloak over small figure of Commodus at his feet and holding sceptre; S-C across fields
Ref: RIC 308c; BMC 448; Sear 5763
(12) Decius 249-250 AD
Obverse: laureate, cuirassed bust right from behind; IMP C M Q TRAIANVS DECIVS AVG
Reverse: Dacia standing left holding staff topped with an wolf's head; D_A_CIA / S C
Ref: SRCV III 9399, RIC IV 112a, Cohen 1...
(13) Domitian 85 AD
Obverse: IMP CAES DOMIT AVG GERM COS XI CENS PER P P, Bust of Domitian facing right, wearing laurel wreath and aegis
Reverse: No inscription, Domitian standing in military attire, head left, holding thunderbolt and spear, being crowned by Victory at right standing with head left; SC in exergue
Ref: RIC II Part I (2nd Ed.) Domitian 40...
(14) Drusus I 41-42 AD
Obverse: NERO CLAVDIVS DRVSVS GERMANICVS IMP / bare head left
Reverse: TI CLAVDIVS CAESAR AVG P M TR P IMP / Claudius, togate, seated left on curule chair, holding branch; arms lying around; SC in ex.
Ref: RIC 93
(15) Drusus I 41-50 AD
Obverse: NERO CLAVDIVS DRVSVS GERMANICVS IMP, Bare head of Drusus facing left
Reverse: TI CLAVDIVS CAESAR AVG P M TR P IMP S C, Claudius, togate, seated left on curule chair, holding branch in right hand; various arms around
Ref: RIC I (2nd Ed.) Claudius 93
(16) Faustina II 161-164 AD
Obverse: diademed and draped bust right; FAVSTINA__AVGVSTA
Reverse: Juno standing left, holding patera and long scepter, peacock left at her feet; IVNONI__REGINAE / S__C
Ref: RIC III MA1651, Cohen III 142
(17) Gordian III 242 AD
Obverse: IMP GORDIANVS PIVS FEL AVG, Bust of Gordian facing right, wearing laurel wreath, cuirass, and drapery
Reverse: PM TR P V COS II P P, Gordian in military attire, standing facing right, holding spear and globe; SC in fields
Ref: RIC IV Gordian III 307
(18) Gordian III 241-244 AD
Obverse: IMP GORDIANVS PIVS FEL AVG / Bust of Gordian III, laureate, draped, cuirassed, right
Reverse: IOVI STATORI S C / Jupiter, nude, standing front, head left, holding long sceptre in right hand and thunderbolt in left hand
Ref: RIC 298a
(19) Gordian III 238-239 AD
Obverse: IMP CAES M ANT GORDIANVS AVG, laureate, draped & cuirassed bust right
Reverse: VICTORIA AVG S-C, Victory advancing left carrying wreath & palm
Ref: RIC 258a, Cohen 358
(20) Gordian III 241-243 AD
Obverse: laureate, draped and cuirassed bust right from behind; IMP GORDIANVS PIVS FEL AVG
Reverse: Jupiter standing, facing, holding scepter and thunderbolt; IOVI__STATORI / S__C
Ref: RIC 298a; Cohen 111
(21) Gordian III 240 AD
Obverse: laureate, draped and cuirassed bust right from behind; IMP GORDIANVS PIVS FEL AVG
Reverse: Pax walking left, holding branch and scepter; PAX_AETERNA / S__C
Ref: RIC IV-3, 319a
(22) Hadrian 134-138 AD
Obverse: HADRIANVS AVG COS III P P Laureate, draped bust to right
Reverse: MAVRE-TANIA, Mauretania standing to l., holding two javelins and bridle of horse with raised r. foreleg. S C in exergue
Ref: RIC 859
(23) Hadrian AD 119-120
Obverse: IMP CAESAR TRAIANVS HADRIANVS AVG P M TR P COS III, laureate bust right, slight drapery on left shoulder
Reverse: MONETA AVGVSTI, Moneta standing left holding scales and cornucopiae
Ref: RIC 586c; BMC 1196; Sear 3611
(24) Hadrian 134-138 A.D.
Obverse: HADRIANVS AVG COS III P P, Laureate head right
Reverse: SALVS AVG S C, Salus standing left with sceptre and feeding out of patera a snake coiled around an altar.
Ref: RIC 786
(25) Hadrian 117 - 138 AD
Obverse: IMP CAESAR TRAIAN HADRIANVS AVG P M TR P COS III / laureate bust right
Reverse: PIETAS AVGVSTI S-C / Pietas standing right, sacrificing over altar
Ref: RIC 587
(26) Julia Mamaea 230 AD
Obverse: draped bust right; IVLIA MAMA_EA AVGVSTA
Reverse: Felicitas seated left holding caduceus and cornucopiae; FELICI_TAS PVBLICA / S C
Ref: RIC IV Sev. Alex. 679; Cohen 26, BM...
(27) Lucilla 164-166 AD
Obverse: draped bust right; LVCILLAE AVG__ANTONINI AVG F
Reverse: Venus facing, head left, holding apple and scepter; VENVS / S__C
Ref: SRCV II 5507, RIC III 1767, BMCRE I...
(28) Marcus Aurelius 171-172 AD
Obverse: M ANTONINVS AVG TR P XXVI, Head of Marcus facing right, wearing laurel wreath
Reverse: IMP VI COS III, Victory placing a shield inscribed VIC GER in two lines on trunk of palm; SC in fields
Ref: RIC III Marcus Aurelius 1029
(29) Marcus Aurelius 158 AD
Obverse: AVRELIVS CAES ANTON AVG PII F / Head bare right
Reverse: TR POT XII COS II S C / Felicitas standing left, leaning on column and holding caduceus and scepter
Ref: BM-2049, C-728, RIC-1345
(30) Marcus Aurelius 167-168 AD
Obverse: laureate head right; M ANTONINVS AVG ARM__PARTH MAX
Reverse: Fortuna Redux seated left holding rudder and cornucopiae; TR POT XXII•IMP V COS III / S__C / FORT RED
Ref: RIC 957; Cohen 211
(31) Marcus Aurelius 177-178 AD
Obverse: laureate head right; M AVREL ANTONINVS AVG TR P XXXII
Reverse: Felicitas standing left holding caduceus and scepter; FELICITAS__AVG__IMP VIIII COS III P P / S__C
Ref: RIC 1227, Cohen 184v.
(32) Maximinus I 236-238 AD
Obverse: MAXIMINVS PIVS AVG GERM, Bust of Maximinus facing right, wearing laurel wreath, cuirass, and drapery
Reverse: VICTORIA GERMANICA, Victory standing facing, wearing drapery, head left, holding wreath and palm; bound captive at left; SC in fields
Ref: RIC IV Maximinus Thrax 90
(33) Maximinus I 236-238 AD
Obverse: MAXIMINVS PIVS AVG GERM / Laureate, draped, cuirassed bust right
Reverse: FIDES MILITVM S-C, Fides standing left holding two standards
Ref: RIC 78
(34) Maximus 236 AD
Obverse: draped bust right from behind; C IVL VERVS MAXIMVS CAES
Reverse: Maximus standing left, holding baton and spear, two legionary standards behind; PRINCIPI IVVENTVTIS / S__C
Ref: RIC 9, Cohen 12, BMC 123
(35) Nero 65 AD
Obverse: Laureate head left
Reverse: Temple of Janus with latticed window on left and garlanded and closed double doors on right
Ref: RIC I 265; WCN 153.
(36) Otacilia Severa 247 AD
Obverse: draped bust right; OTACIL SEVERA AVG
Reverse: Concordia seated left holding patera and double cornucopia; CONCORDIA AVGG / S C
Ref: RIC 203e, Cohen 5
(37) Philip I 247-249 A.D.
Obverse: IMP M IVL PHILIPVS AVG
Reverse: ANNONA AVGG S-C
Ref: RIC 168a
(38) Philip I 249 AD
Obverse: laureate, draped and cuirassed bust right from behind; IMP M IVL PHILIPPVS AVG
Reverse: Roma sitting in octastyle temple, holding ? and scepter; SAECVLVM NOVVM / S C
Ref: RIC IV 164; Banti 52
(39) Philip I 246 - 247 AD
Obverse: IMP M IVL PHILIPPVS AVG / laureate bust right
Reverse: FELICITAS TEMP S-C / Felicitas standing left with caduceus & cornucopiae
Ref: RIC IV 169a; Cohen 44
(40) Philip I AD 244
Obverse: IMP M IVL PHILIPPVS AVG, laureate, draped and cuirassed bust right
Reverse: LAET FVNDATA, Laetitia standing left, holding wreath and rudder set on globe
Ref: RIC 175a; Sear 8997
(41) Septimius Severus 195-196 A.D.
Obverse: L SEP SEV PERT AVG IMP VII, laureate head right
Reverse: PM TRP III COS II PP, S-C, Jupiter standing left, holding Victory and sceptre, eagle at foot left.
Ref: RIC 704
(42) Severus Alexander 231-235 AD
Obverse: IMP ALEXANDER PIVS AVG, laureate, draped, and cuirassed bust right.
Reverse: MARS V-LTOR, S-C across field, Mars advancing right, holding spear and shield.
Ref: RIC IV 635d, BMCRE 847, Cohen 169
(43) Severus Alexander 231-235 AD
Obverse: IMP ALEXANDER PIVS AVG, Bust of Alexander facing right, wearing laurel wreath, slight drapery on far shoulder
Reverse: SPES PVBLICA - Spes walking left, holding flower, lifting skirt with left hand; SC in fields
Ref: RIC IV Severus Alexander 648b
(44) Severus Alexander 226 AD
Obverse: laureate draped bust right from behind; IMP CAES M AVR SEV ALEXANDER AVG
Reverse: Mars holding spear and trophy, wearing chalmys, walking right; P M TR P__V__COS II P P / S__C
Ref: RIC IV 440; BMCRE 357-8; Banti 66
(45) Severus Alexander 226 AD
Obverse: laureate, draped and cuirassed bust right from behind; IMP CAES M AVR SEV__ALEXANDER AVG
Reverse: Mars holding spear and trophy, wearing chalmys, walking right; P M TR P V__COS II P P / S__C
Ref: RIC IV 440; BMCRE 357; Cohen 282
(46) Severus Alexander 231-235 AD
Obverse: laureate head right; IMP ALEXAN_DER PIVS AVG
Reverse: Providentia of Annona standing front, head left, holding anchor and grain ears over modius; PROVIDENTIA AVG / S__C
Ref: RIC IV 645, BMCRE V 815, Cohen 509,...
(47) Titus AD 80-81
Obverse: IMP TITVS CAES VESP AVG P M TR P PP COS VIII, laureate head left
Reverse: Spes advancing left, holding flower and raising skirt; S-C across field
Ref: RIC² 171
(48) Titus AD 80-81
Obverse: DIVO AVG VESP, the deified Vespasian seated to right, holding sceptre and Victory in cart drawn by a quadriga of elephants with riders; SPQR in exergue
Reverse: IMP T CAES DIVI VESP F AVG P M TR P P P COS VIII around large S C
Ref: RIC (Titus) 257 (same obverse die);...
(49) Trajan 103-111 A.D.
Obverse: IMP CAES TRAIANO AVG GER DAC PM TR P COS V PP
Reverse: SPQR OPTIMO PRINCIP
Ref: Ric 530
(50) Trajan 114 AD
Obverse: IMP CAES TRAIANO OPTIMO AVG GER DAC P M TR P COS VI P P, laureate and draped bust right.
Reverse: SENATVS POPVLVSQVE ROMANVS S C, Felicitas standing left, caduceus in right hand, cornucopia in left hand.
Ref: Woytek 499v, RIC II 671, BnF IV 840...
(51) Trajan 116 AD
Obverse: laureate draped bust right; IMP CAES NER TRAIANO OPTIMO AVG GER DAC P M TR P COS VI P P
Reverse: Fortuna Redux seated left holding rudder and cornucopiae; SENATVS POPVLVSQVE ROMANVS FORT RED / S C
Ref: SRCV II 3193, RIC II 652, Cohen 158
(52) Trajan 108-110 AD
Obverse: laureate bust right, draped left shoulder; IMP CAES NERVAE TRAIANO AVG GER DAC P M TR P COS V P P
Reverse: Annona standing left holding cornucopiae and grain ears; modius on left and prow of galley right; S•P•Q•R•OPTIMO PRINCIPI / S C
Ref: Woytek 323bD, Banti 118, RIC II 492...
(53) Trajan 108-110 AD
Obverse: laureate bust right, draped left shoulder; IMP CAES NERVAE TRAIANO AVG GER DAC P M TR P COS V P P
Reverse: Annona standing left holding cornucopiae and grain ears; modius on left and prow of galley right; S•P•Q•R•OPTIMO PRINCIPI / S C
Ref: Woytek 323bD, Banti 118, RIC II 492...
(54) Vespasian 71 AD
Obverse: IMP CAES VESPASIAN AVG PM TR PPP COS III, laureate head right
Reverse: S-C, Mars walking right, carrying spear and trophy.
Ref: RIC II 199; BMC 777; Paris 539.
(55) Vespasian 71 AD
Obverse: laureate head right; IMP CAES VESPASIAN AVG P M TR P P P COS III
Reverse: Roma standing left, holding spear and Victory; ROMA / S__C
Ref: RIC II 190, BMCRE II 560, Cohen 419