Eboya Natsume Shinkai Deep Sea Small Fountain Pen
Eboya, the last factory dedicated to ebonite production in Japan. Each piece reflects the commitment to traditional craftsmanship and continuous innovation. The use of ebonite—one of the first polymers ever discovered—gives this pen a unique aesthetic: ebonite is produced by vulcanizing pure rubber with sulfur (between 25% and 50%), and its name comes from ebony, which it began to replace in specific applications thanks to its durability and natural shine. Engraved on the body, as with all pieces of the brand, is Eboya Made in Tokyo, a testament to its origin and excellence.
Concept and Design
This model stands out for its solid thickness and well-balanced finish, designed for comfortable writing both posted and unposted. The body is made of marbled ebonite colored over a black ebonite base, an exclusive color by Nikko Ebonite Manufacturing. The Shinkai finish—which means “deep sea” in Japanese—combines an intense blue tone with dark nuances that evoke the depth of the ocean. The surface offers a silky, non-slip touch that allows for hours of fatigue-free writing.
Available Colors
- Devotion: red
- Nichibo: orange
- Kougetsu: yellow
- Young Leaves: yellow-green
- Kunpuu (fragrant breeze): green
- Deep Sea: blue
- Shenron (Shinryō): beige
- Black Ebonite: solid black
Please check availability and estimated delivery time before placing your order. At Inktraveler we pride ourselves on working with real stock, but we also accept special orders in case of unavailability.
Functionality and Filling System
Equipped with a carefully tuned 14K gold nib, this pen offers smooth, precise, and balanced writing. It uses an international standard cartridge or converter filling system, compatible with brands such as Pelikan or Rotring (not compatible with Montblanc, Waterman, or Caran d’Ache). Each body is turned and polished in Tokyo by the artisans of Nikko Ebonite Manufacturing. The perfect assembly of all its parts results in, along with the color of its ebonite, a piece of great beauty and quality.
Package Contents
• Eboya Natsume Shinkai Deep Sea Small Fountain Pen
• International standard converter
• Ink cartridge (1 piece)
• Paulownia wood box (Inktraveler replaces the standard cardboard box with this exclusive case)
• Warranty
(Photographs are for reference only and may slightly differ from the final product.)
Technical Specifications
- Body material: ebonite
- Color: deep sea (Shinkai)
- Closed length: 132 mm
- Barrel diameter: 12.4 mm
- Cap diameter: 13.5 mm
- Clip: gold-plated
- Nib: 14K gold
- Filling system: standard cartridge/converter
- Made in Tokyo, Japan
Care and Maintenance
It is recommended to avoid direct exposure to sunlight or moisture and store it in a dark place. Occasional cleaning with a soft cloth is enough to maintain its beauty.
Brand History and Philosophy
Eboya is the flagship brand of Nikko Ebonite Manufacturing, founded in 1952 and recognized as the last Japanese manufacturer specializing in ebonite. For decades, it has supplied this material to major writing houses such as Sailor and Pilot. In 2009, it launched its own line of fountain pens, combining technical expertise and Japanese aesthetic sensibility. Until 2016, production was led by master turner Noritoshi Kanesaki, a disciple of the legendary nibmeister Kubo Kohei, bringing a unique artisanal legacy. Today, Eboya continues to create durable, comfortable writing instruments with an unmistakable finish.
"A jewel that unites Japanese spiritual tradition with excellence in writing."
