Fountain Pens
Conway Stewart Alan Turing: A Fountain Pen With a Secret Compartment
A limited edition British fountain pen honoring Alan Turing, with black and yellow resin, sterling silver trim, an 18k gold nib, and a hidden note compartment in the barrel.
Introduction
Conway Stewart has been making pens in Britain since 1905, and the Alan Turing is one of its most intriguing themed releases. Produced in conjunction with the National Museum of Computing, it pays tribute to the English mathematician, logician, and codebreaker whose work on cracking the Enigma machine became a turning point of World War II. This is a variation on the Conway Stewart Churchill model, built in black and yellow resin with sterling silver trim, and it hides a few surprises worth knowing about before you spend serious money.
Who This Pen Is For
At a bit over 700 direct from Conway Stewart, and seen at some retailers for slightly less around 575, this is squarely a luxury purchase where value is subjective. It makes the most sense for collectors with a genuine interest in Turing and his work, or fans of British penmaking who want a limited edition with real character. If you simply want a Conway Stewart and the theme does not matter to you, the brand’s site offers Churchill models and similar pens in the mid-500 range that may be an easier way in. There is also a rollerball version of this pen in the low 600s if you prefer not to deal with ink at all.
Presentation and First Impressions
The pen arrives in a leather or faux-leather box with a pop-off top, inside of which sit a certificate of authenticity, some information about Conway Stewart, and the pen itself. The clever part is the underside of the lid: it holds a felt-lined tray that turns into a classy little desk stand for displaying the pen. That kind of multi-purpose packaging is genuinely rare, and it gives the box a life beyond simply receiving the pen and throwing it away.

Design and Build Details
The cap finial is adorned with a silver X surrounded by black enamel, a replica of the X key on an Enigma machine and a nod to Station X, the codename for the Bletchley Park base where Turing and his team worked. The pop of yellow here looks sharp, and the ridges on the side of the finial add nice texture. The clip has a unique profile with the Conway Stewart logo stamped on top, and it is flexible enough to work well in a shirt pocket or thicker materials.

A sterling silver band engraved with “Enigma” wraps the straight end of the cap. Interestingly, the front half of the band is more polished while the back half appears unpolished, likely a side effect of the engraving process. The back of the clip carries the sterling silver hallmarks indicating the silversmith, purity, authentication location, and date letter for 2023, which is always fun to decode. The barrel is straight and engraved with the pen name and “Made in England.” With the naked eye the engraving looks fine, but up close the laser lines are visible. It is not terrible, just not as refined as it could be.
The Secret Compartment
The yellow resin barrel end is engraved with the limited edition number out of 251 units, and it holds the pen’s best trick: screw it off and there is a small compartment where you can roll up a piece of paper and store a secret note. A paper slip is included.
There are a couple of practical caveats. The converter extends to the end of the barrel, so its tip inserts into the hole in the rolled note. A lengthy or loosely rolled note makes reattaching the end piece fiddly. And if you clean the pen by flushing the barrel, remove the note first or you will ruin it.
Nib, Filling, and Handling
The cap twists off in about one and a half rotations to reveal the highlight: an 18k gold two-tone number six nib available in extra fine, fine, medium, and broad (broad at additional cost), plus specialty grinds including italic, left oblique, right oblique, and stub. The section is concave resin with a yellow strip between two thin bands, and it is long enough to accommodate a wide variety of grip styles.
This is a cartridge-converter pen accepting standard international cartridges, with a metal-reinforced converter included. Eyedroppering is not recommended. The pen is long enough to use unposted, which is the preferred configuration here: the cap posts securely but not deeply, and posting slightly back-weights the pen and throws off the balance.
Writing Performance
The medium 18k gold nib is very pleasant to write with. You can coax a bit of line variation with pressure, ink flow is generous for a medium, and the plastic feed keeps up without trouble.
Reverse writing is a little scratchy and not the nib’s strength. In fast writing it is not buttery smooth, but it delivers decent feedback and never skips a beat. Paired with an ink that shades nicely in a greenish direction, the overall writing experience feels every bit as refined as the pen’s construction suggests.

Buying Advice
This pen is very well constructed, feels like a quality writing instrument, writes very well, and has a classic, refined look with welcome pops of color. The secret compartment adds a touch of personality you will not find in most luxury pens. The engraving quality on the barrel is the main compromise at this price, and the converter-versus-note interference is a minor quirk worth knowing about.
Conclusion
The Conway Stewart Alan Turing is an interesting, sharp-looking limited edition with a genuine theme and a fun hidden surprise. If you are a fan of Turing and his work, it is worth exploring further. If you just want to add a Conway Stewart to your collection, their Churchill models in the mid-500 range deserve a look too.
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