Commodus AR denarius. 18mm; 3.44g. AD 192, Alexandria mint.

M COMM ANTON AVG PIVS BRIT, laureate head right.
LIR AVG P M TR P [XVII] COS VII P P, Libertas standing 
left, holding pileus and vertical rod. 
Star in upper left field. 

Very rare.
RIC III 241 var (rev legend); BMCRE 308; Cohen 288 var, .
Bickford-Smith, "The Imperial mints in the East for Septimius Severus", in "Italiana di Numismatica Vol. XCVI, 1994-1995, p. 54 note 7;