antique French pneumatic flap shutter: Guerry "à double volet" Pneumatic shutter from the French maker Claude Guerry, intended to be placed inside the studio cameras. It can also be used by attaching the shutter to the front of the lens. From the first model introduced in 1879 until the 1940s, the Guerry shutters were present in the catalogues for a long time. The model "à double volet" was released in 1887. good condition working, both flaps are fully lightproof comes with rubber bulb (tube and bulb seem not original) hole diameter: 70mm body size: 129x120x39mm weight: 290g shipping method: Post Office or GLS (depending on your country) registered, with track and trace on internet in case you buy 2 or more lots I will combine shipping and will refund you the overpaid postage