Web site: https://www.ancient-jewellery.com/
This is a nice excavated ancient Roman silver Siliqua of emperor Gratian dating to 367 - 383 A.D.
D N GRATIANVS P F AVG pearl-diademed, draped & cuirassed bust right
VRBS ROMA Roma seated left on cuirass, holding Victory on globe and reversed spear.
This coin was minted between the years 375 - 378 at Treveri (Trier in Germany), mintmark TRPS.
DATE: 375 - 378 A.D.
MINTMARK: TRPS (Trier, Germany)
WEIGHT: 2.02 grams
ATTRIBUTION: RIC IX 46b1; DOCLR –; RSC 87†a.