Ancient Roman silver denarius of Caracalla / Sol

This is an ancient Roman silver denarius, of emperor Caracalla, minted at Rome in 199 - 200 AD. 

Obverse: ANTONINVS AVGVSTVS, "The August Antoninus" laureate, draped, cuirassed bust right

Reverse: PONTIF TR P III, "[High] priest, holder of tribunician power for the third time." Sol standing facing, head left, holding globe and reversed spear.  

CULTURE: ROMAN

DENOMINATION: Denarius

MATERIAL: Silver

DATE: 198 - 217 AD (this coin minted between 199 - 200 AD)

SIZE: 18.5mm dia

WEIGHT: 3.33 grams

ATTRIBUTION: (RCV 2000 Edition) Number 6857, RIC 30a, RSC 413, BMC 179

PROVENANCE: Private collection. Cologne, Germany.