Platinum Celluloid Koi

With its vivid mosaic of red and white, the Platinum Celluloid Koi fountain pen resembles the brightly colored Koi fish of its namesake.

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Overall Rating

January 17, 2022



I love this pen. It's so beautiful, and the celluloid feels warm and welcoming in the hand. I wanted to used this as a signature pen, but the writing experience is so pleasant that I've used it to for letters and even some poetry. I've had it for a year now--it sits on my writing desk and makes me so happy!

Compact and stylish, the Platinum Celluloid Koi fountain pen comes in gold trim. Celluloid is a classic material for fountain pen caps and barrels. 

This durable and well-designed cartridge-converter pen is available in your choice 14k gold nib.

The pen can be filled with bottled fountain pen ink using the provided converter, and can also use convenient Platinum brand ink cartridges. Hand-painted Maki-e converters are also available.


These 14k Platinum nibs are well-suited to customizations including Stub, Cursive Italic, or Left Oblique, as well as the modification for added flex - see our nib customizations page for more information.
The pen comes attractively packaged in a presentation case and includes converter and a starter ink cartridge.

Unless requested otherwise, each pen or nib you purchase from us will be carefully examined, tested, and optimized for your personal writing characteristics before it ships. See our nib set-up and optimization page for more details.

Measurements & Specifications

Closed Length 5.4"
Posted Length 5.9"
Barrel Length 3.8"
Barrel Diameter 0.5"
Section Diameter 0.4"
Ink Capacity 1.5 ml
Filling System Cartridge-Converter
Cap Type Threaded
Clip With Clip
Cartridge Capacity 1.5 ml
Converter Capacity 0.6 ml
Postable Postable
Pen Weight 24.1 g
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