1/4 Siliqua - Gregory III

Gregory III never held temporal coinage authority in any formal sense — this fraction belongs to a transitional moment when the papacy was drifting, almost involuntarily, toward political autonomy from Constantinople. The immediate trigger was the Iconoclast controversy: Leo III's 730 edict mandating the destruction of religious images prompted Gregory to convene two synods condemning imperial policy, after which Byzantine administrative control over Rome became increasingly nominal. Coinage attributed to his pontificate reflects that ambiguity — it is not quite imperial, not quite sovereign.

The Berman and MEC references place this among the earliest coins assigned to papal authority, though scholarly debate over the issuing chronology remains unsettled.