A 1872 model centerfire revolver

dating: 1872 - 1877 provenance: Swiss, Rifled, octagonal, 10 mm cal. barrel, with foresight, marked 'DB 4' below and with another mark. Ribbed six-shot cylinder, blued; loading gate. Frame marked 'CDS' in an oval. Checkered wooden grips, ring for the strap. Serial number '4xxx' on barrel and frame. length 31 cm.