Gros - Adrian I

Historical Context: Adrian I (Adrian von Riedmatten), Prince-Bishop of Sion from 1529 to 1548, governed during a period of significant religious and political flux in the Valais. The issuance of this Gros coin affirmed his temporal sovereignty as an Imperial Estate, underscoring the Bishopric's economic autonomy. These billon coins were vital for local commerce, facilitating daily transactions and asserting the Bishop's right to mint currency within the diverse monetary landscape of early modern Switzerland.

Artistry: The design reflects transitional artistic styles of early 16th-century Swiss coinage, blending Late Gothic heraldic tradition with nascent Renaissance influences. While the engraver is unrecorded, dies were locally produced. The obverse typically features Prince-Bishop Adrian I's armorial bearings, often quartered with the Bishopric's arms, encircled by his name and title. The reverse commonly displays a prominent ecclesiastical symbol or the arms of Sion, such as Saint Theodul or the Virgin Mary, signifying the See's spiritual authority.

Technical/Grading: Struck in billon (1.97 gg, 20 mm), this Gros's high points prone to wear include the Bishop’s mitre or central heraldic devices. Due to billon's properties and era minting techniques, examples often exhibit weak strikes, especially on legends and peripheral design. Planchet irregularities like laminations or incomplete flans are common. A well-centered strike with clear legends and minimal wear on primary devices represents a highly desirable specimen.