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Septimius Severus, AE sestertius, 22.40 g. struck AD 197-198, Rome Mint.

L SEPT SEV PERT AVG IMP X, laureate cuirassed bust right.
TR P VI COS II P P S-C, Sol, naked, standing left, holding whip and raising right hand. 

RIC 744; Cohen 450.
Very rare. None in CoinArchivesPro in May 2022; no example in the ANS OCRE database.