A Limited-Edition Titanium Fountain Pen for Collectors
Precision-machined from Grade 5 titanium. Backed by 83 Kickstarter supporters.
Limited to the original production run. Once sold out, it will not be made again.
★★★★★
"The craftsmanship is outstanding. From the presentation box to the finish of the pen itself, everything feels premium. It's clear that a huge amount of care has gone into every detail."
— Jeffrey, UK • June 2026
Precision-machined from Grade 6 flight-grade aluminium, the ION Pen Collector’s Edition delivers exceptional lightness without compromising strength. Its sleek, minimalist profile is designed for everyday performance, offering a perfectly balanced feel in hand and a smooth, effortless writing experience. The anodised finish adds durability and a refined aesthetic, while compatibility with standard ink cartridges or converters ensures lasting versatility. Individually numbered and made in limited batches, this edition is ideal for collectors and those who value functional design elevated by aerospace-grade materials.
Limited Edition MATHEMATICS artwork designed by Charles- 100 editions only.
All Compact pens are supplied with a double-threaded barrel as standard. If you would like a double thread on any other sizes, please contact us via the form, quoting your order number.
The pens are supplied without a logo as standard. If you would like a logo added to either end cap, please submit a request form after placing your order.
Authentication plate upgrades available in precision-engraved aluminium or titanium.
Crafted from Grade 5 titanium, the ION Pen Collector’s Edition is a precision-engineered writing instrument designed for balance, durability, and effortless performance. Its sleek, minimalist design is paired with a satisfying weight and smooth feel in hand, making it as functional as it is refined. Ideal for collectors and professionals alike, this limited edition pen offers a fluid writing experience and is compatible with standard ink cartridges or converters. Each piece is supplied with an authentication certificate signed by Charles, making it a distinctive addition to any serious collection.
Limited Edition MATHEMATICS artwork designed by Charles- 100 editions only.
All Compact pens are supplied with a double-threaded barrel as standard. If you would like a double thread on any other sizes, please contact us via the form, quoting your order number.
The pens are supplied without a logo as standard. If you would like a logo added to either end cap, please submit a request form after placing your order.
Authentication plate upgrades available in precision-engraved aluminium or titanium.
★★★★★
"The balance is excellent, the nib writes beautifully, and the engraving is exceptionally crisp.
— Richard, USA • May 2026
Originally funded by collectors. Now available in limited quantities.
Crafted from Aerospace-Grade Titanium
Every ION MATHEMATICS pen is crafted with exacting attention to detail. From its smooth-flowing nib to the perfectly balanced body, this pen is built for collectors, writers, and anyone who appreciates the artistry of fine writing instruments.
Precision-machined nib for effortless writing
Luxurious, hand-finished materials
Balanced weight for comfort during long writing sessions
Available in Compact, Regular and XL sizes
★★★★★
"I have recently purchased both an aluminium Collector's Edition and a titanium ION fountain pen. The quality, appearance and writing experience are superb and better than many of the much more expensive ones in my extensive collection. It is great to see a British manufacturer (who are few and far between) producing pens of this quality. These will not be the last pens I purchase from Charles Lethaby."
— David, UK • March 2026
LIMITED STOCK - DON’T MISS OUT!
The ION MATHEMATICS Fountain Pen was a Kickstarter success and is now available for a limited time. Once these pens are gone, they won’t be produced again.