Antoninus Pius 138-161 AD Minted in Rome Weight 3.08 grams Size: 18mm Obverse: ANTONINVS AVG PIVS PP TR P COS III, bare head right Reverse: SALVS AVG, Salus seated left by altar, holding patera and sceptre and feeding serpent rising from the altar 

Constantine I - Commemorative posthumous issue Size: 15mm Weight: 1.57 grams Minted: AntiochObverse: DV CONSTANTINVS PT AVGG Veiled head of Constantine right Reverse: Constantine in quadriga right, extending hand toward Manus Dei (Hand of God) above, SMANΓ in exergue. 

Helena Minted in ThessalonicaSize: 18mm Weight: 2.92 grams Ae bronze follis Obverse: FL HELENA AVGVSTA, diademed and draped bust right, hair elaborately dressed Reverse: SECVRITAS REIPVBLICE, Helena standing left, holding branch downwards 

You are buying all 3 silver coins in the photo. Sizes: 18-23mmWeights: 3.2 grams, 2.7 grams and 2.7 grams

Vespasian AR HemidrachmMinted in Caesaria, CappadociaSize: 14.5mm Weight: 1.5 grams Obverse: Laureate head of Vespasian right Reverse: Nike advancing right, holding wreath and palm. Reference: Metcalf 17; Sydenham 94; RPC II 1659.

Hadrian 117-138 AD AR silver denariusSize: 17.5mm Weight: 3.3 grams Obverse: IMP CAESAR TRAIAN HADRIANVS AVG, laureate, cuirassed bust rightReverse: P M TR P COS III, Victory flying right, holding trophy 

Vespasian AR HemidrachmMinted in Caesaria, CappadociaSize: 16mm Weight: 1.3 grams Obverse: Laureate head of Vespasian right Reverse: Nike advancing right, holding wreath and palm. Reference: Metcalf 17; Sydenham 94; RPC II 1659.

Alexander III The Great AR silver drachm Weight : 4.2 grams Size: 18mm Obverse: Head of Herakles wearing lionskin headdress Reverse: AΛEΞANΔΡOY, Zeus seated left, holding eagle and sceptre. 

Michael II Amorianus with Theophilus Size: 30.06mm Weight: 8.43 grams Obverse: mIXAHL S ΘEOFILOS Crowned facing busts of Michael, wearing chlamys, and Theophilus, wearing loros; cross above Reverse: Large M; cross above, X/X/X to left, N/N/N to right, Ө below  Reference: Sear 1642.

Tiberius 14-37ADMinted in Koinon of Galatia, GalatiaSize: 20.41mm Weight: 6.05 grams Obverse: ΤΙΒΕΡΙΟΣ ΚΑΙΣΑΡ Bare head of Tiberius leftReverse: ΕΠΙ ΠΡΕΙΣΚΟΥ ΜΗΤΗΡ ΘΕΩΝ Turreted and draped bust of Kybele right; ΓΜ (date) to rightReference: RPC I 3553.

Nero 54-68 ADMinted in Apollonoshieron, LydiaSize: 16.86mm Weight: 3.94 grams Obverse: NEPΩN KAICAP CΕΒΑCΤΟC, laureate head rightReverse: AΠOΛΛΩNI-EPEITΩN, Apollo standing facing, head left, holding patera and lyre.  RPC I 3045.

Pontos. Amisos 105-63 BC AE Bronze Size: 19.69mm Weight: 8.38 grams Obverse: Aegis with Gorgon's head at center Reverse: AΜΙΣΟΥ Nike advancing right, holding wreath and palm branch, between two monograms  SNG BM Black Sea 1177; HGC 7, 242