German States-Regensburg, Free City, Regular Coinage, Kreuzer, Undated (1744-1752), Johann Christoph Busch as Mint Official (No legend) Crowned Imperial double-eagle, orb on breast inscribed with 1 (No legend) Regensburg arms within dotted circle and ornate frame, B within below Rolled flan 17mm, 0.80g, Billon SilverMintage: 32,000KM 292