This pen was very popular during the 50’s because it allowed both right-handed and left-handed people to write with ease. This one is authentic from the 40’s/50’s and is in perfect aesthetic and working condition. It has a very good rating on the collector’s market as the book “L’oeil du Chineur aux Editions,” by Judith Miller attests. Grund. It works perfectly and has a very good capacity. Piston works perfectly. It measures 130 cm and has a diameter of 12 mm at the cap. Authenticated by the Tentinkuli brand on the red ring on the cap. No reserve price. Very carefully packaged. Registered shipping with signature required on delivery. Thank you for your bids.