I've only got time for a cursory look at these now, TC, but I think you may be right. The varied degrees of wear make the assessment a bit challenging, but there do seem to be a lot of correspondences. Nicely spotted.
Augustus. 27 BC-AD 14. AR Denarius. Struck 19/8 BC. Rome mint. P. Petronius Turpilianus, moneyer. Obv: CAESAR AVGVSTVS, bare head right P PETRON TVRPILIAN III VIR, winged Siren standing left, holding a flute in raised right hand and another flute in left hand at her side. RIC I 296; RSC 490; BMCRE 27-8; BN 154-6. Banker's marks on obverse and reverse.
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