1940s Kaweco Sport. Perhaps the most enduring pen design of all time, first created in 1929 and recently revived by Visconti. These are the real deal, in black chased celluloid, with piston fillers and alloy nibs. These are neat pens. Closed they are all of 3 7/8 inches long and can be carried anywhere, anyhow; but posted they grow to a full 5 3/4 inches. I'm pleased to have come back from my recent travels with five of them. They typically sell in a heartbeat, so if you want one do it now.