Berthiot Perigraphe N°3 Serie VIa f/14 - 120mm brass lens. Serial number: No. 159051. Screw thread diameter: 43mm. With board dimensions: 97x72mm.
Good condition. Presence of traces of wear and corrosion on the lens body. The diaphragm ring is working properly. Objective without fungus, without haze, without peeling. Presence of a small scratch on the rear lens. 
Antiq-Photo establishment
Berthiot Perigraphe N°3 Serie VIa f/14 - 120mm brass lens. Serial number: No. 159051. Screw thread diameter: 43mm. With board dimensions: 97x72mm. Good condition. Presence of traces of wear and corrosion on the lens body. The diaphragm ring is working properly. Objective without fungus, without haze, without peeling. Presence of a small scratch on the rear lens.