Home of Paul E. Wirt pens & the Museum of Fountain Pen Filling Systems
This is a modified matchstick filler, with the stored stick mimicking a lever. However, there is no internal portion on the metal piece. The stick is attached with a barrel pin via an elongated slot through the stick. Once the stick is raised 90 degrees, it can be pushed in like a matchstick on a matchstick filling style fountain pen.