Coin is quite a looker and comes from Israel.
TACITUS AE22mm 3.85g Double Antoniniani/Aureliani (VF, desert patina)
AV: IMP C M CL TACITVS AVG; radiate, cuirassed and draped with paludamentum bust r.
REV: CLEMENTIA TEMP; Emperor in military dress stg. r., holding short eagle-tipped sceptre in l. hand, receiving a globe from Jupiter stg. l., holding long sceptre in l. hand. S in middle field.
EXE: XI
REF: BNC p.437, RIC V-1 211, RIC Online #4093 rare coin, just 3 specimens recorded by S. Estiot, 3rd issue Antioch mint January-June 276AD.
http://www.ric.mom.fr/en/coin/4093 coin is obverse die match w/ London (1928 3-4-733)