The barrels have gold bands at the muzzles, bead front sights, "UNZUETA E HIJOS SANTANDER" and scroll patterns in gold, and octagonal breech sections. The cylinders, and frame have relief engraved scroll patterns. The front of the cylinders also have "B.U." The "A" gun has "1" on the cylinder and breech face. The hammers and triggers have straw colors. The revolvers also have ejector rods on the right and lanyard loops. The later production custom made case also contains a cleaning rod and a screwdriver.

See "A." Provenance: The Dr. Gerald Klaz Collection