Ancient Roman Silver Denarius of Emperor Severus Alexander / Sol the Unconquered Sun

This is an ancient Roman Silver Denarius of Emperor Severus Alexander, minted at Rome in 230 AD 

Obverse: IMP SEV ALEXAND AVG, "Supreme commander (Imperator), Severus Alexander, emperor (Augustus)." Bust of Severus Alexander, laureate, draped, right.

Reverse:  P M TR P VIIII COS III P P "High priest, holder of tribunician power for the ninth time, consul for the third time, father of the nation." Sol, radiate, nude except cloak over shoulders, standing left, raising right hand and holding whip in left hand.

Unconquered Sun

CULTURE: ROMAN

DENOMINATION: Denarius

MATERIAL: Silver

DATE: 222 - 235 AD (minted at Rome in 230 AD)

SIZE: 19mm diameter

WEIGHT:  2.4 grams

ATTRIBUTION:  RIC IV.2# 101b, OCRE# ric.4.sa.101b

PROVENANCE: Formerly in a private collection in Sutton, United Kingdom