I've just acquired this pen from an eBay seller. The name on the barrel says LEADER, there are no other marks. On the nib is marked 14k and in an oval ring ALC9. The pen measures 51/2" long capped, and 63/4" posted. The filling mechanism has a press lever in a cut out channel which can easily be depressed, and protected by a roll over cover. The sac had disintegrated which I replaced and the barrel comfortably accepted one 3" long. I assume this pen is made from Ebonite which Is still in good condition. The feed channel is wide and I initially though it would be a wet writer but isn't. The sac took quite a large quantity of ink and the pen started writing as soon as I put nib to paper and I've been able to write two pages without a skip. I've tried researching the company who made this pen, but so far drawn a blank. Does anyone have a similar pen and be able to give me some information? There is a lever fill on offer with the same name on eBay. Kind regards, Pickwick