Semis - Tiberius ROM ET AVG, altar of Gauls

Struck at Lugdunum (Lyon) in the final years of Augustus's reign, this semis belongs to a series commemorating the Altar of the Three Gauls — the federal sanctuary dedicated to Rome and Augustus at the confluence of the Saône and Rhône, consecrated in 12 BC under Drusus. The altar functioned as the cultic center for the sixty Gallic tribes and was the site of an annual assembly each August 1st. Tiberius's name appears here as heir-designate, reflecting the deliberate dynastic messaging of the Lugdunum mint during the succession period immediately preceding Augustus's death in 14 AD.