Pidault & Tevis type 1857-58 system revolver. Barrel with six shots in gauge 11 mm Pidault with central percussion. No visible hallmark. Barrel with rifled sides with blued remains. Recessed cylinder modified by central percussion plate. Walnut grips. Ejector rod screwed into stock. Slight problems with certain springs, which makes the indxation not very precise with the armed one. Rare piece.