I found a good deal on a Stipula Duetto that I couldn't pass up. I think I had seen one before and liked it, but probably passed because of the price. I got the Cognac with Silver trim. Stipula refers to the material as Cellocride. It has a celluloid and vintage look to it. It doesn't look completely vintage but does put out vibes to that effect. This is a cartridge/converter filling pen.

One thing I noticed right away is the location of the threads on the section. The are at the very end of the section close to the nib. This makes for a smooth surface area where you grip the pen. No section threads to worry about. Another nice thing about this is when you post you don't have to worry about cap threads since they are way up in the cap.

It is one of the nicer posting pens I've seen. When I use a pen I sometimes post and other times I don't. I'd probably post with this pen on a regular basis as it just feels right. Sometimes you post a cap and you are concerned that it might fall off or be too hard to pull off, but not this pen. I think this has to do with the threads or lack of them.

Since there are no threads around the section area and I'm assuming Stipula wanted to keep that area smooth they have you unscrew the pen in the middle of the barrel. Where the additional ring is in the full image above.

It has a nice sturdy clip that should fit over most material. The nib is a nice large 18k two-tone standard Stipula nib.

It's a good size pen at 140mm capped.