My Pelikan 120 Merz & Krell has been on a diet! Sorry, just joking. It’s another excellent German piston-filler, a NOS school-pen. I use to buy them in a bunches of ten pens from seller adrika0202 on Ebay. They are cheap and reliable with springy F-nibs. I use them as give-away pens, and at work. But, as they are old, the pistons are often stiff and need lubrication with pure silicon grease. If you cannot do it yourself, ask the seller about it, or someone who can do it for you.