ROMAN EMPIRE, Antoninus Pius AE Sestertius - RIC 598 left hd. variety

Æ Sestertius (27.6g, Ø33mm, 5h). Rome mint. Struck AD 140-143.
Obv.: ANTONINVS AVG PIVS P P TR P COS III, laureate head of Antoninus Pius facing left.
Rev.: APOLLINI AVGVSTO (around) S C (in field), Apollo, standing left, holding a lyre and a patera.
RIC 598var. (head right); BMCRE 1929 var. (idem,; footnote); Cohen 62 var. (idem); Strack 822 var. (idem); Banti (I Grandi Bronzi Imperiali II-3) 36 (same obv. and rev. dies)
ex G. Henzen

The references for RIC, Cohen and Strack are all for the variant with head right. BMCRE 1229 footnote mentions a variant with laureate head l. (Münzhandlung Basel, 22 March, 1937, lot 736), which turns out to be a different specimen struck from the same obverse die. Banti 36 illustrates this variant with same die pair and reports 2 other specimens.