Photo from a Rakuten Ichiba listing. Same model, but the specification may differ. View the listing Ad

TWSBI ECO Cosmos Blue with/O

Kosumosu Blue with/O · EF · EF

No part number

In productionEF

List price$85Official site price (checked 2026-08-31), incl. tax

Used price—no data yet

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“TWSBI ECO Cosmos Blue with/O” Kosumosu Blue with/O · EF · EF — Fountain pen from TWSBI. Status: In production. List price $85 (Official site price checked 2026-08-31 , incl. tax). No used price yet — no purchase has been reported.

Prices are originally in Japanese yen. Amounts shown are converted at 1 USD = 156 JPY (2026-09-18) and are approximate. ・ List price ¥13,200

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Where to buyAd

Rakuten Ichiba【TW21】【TWSBI / ツイスビー】 ECO / エコ万年筆 Cosmos Blue / コスモスブルー with Onyx F(細字) / M(中字) 【即納宅配便ピストンフィラーインク吸入式スケルトン透明軸デモンストレーター青マーブル】Same model · specs may differJapan-only shop · forwarding needed¥13,200≈ $85

This shop ships within Japan only. A forwarding service can send it abroad. Rakuten Global Express

Color: Kosumosu Blue with/O
Spec: EF
Material: Pen 先 - Cap Ringu 等: Stainless 素材 Ni Black PVD Kotingu

Product photos belong to each manufacturer. Please view them on the official site. See photos on the official site

Sources1

TWSBI 日本正規代理店 (株式会社酒井) Official WebsiteManufacturer official · checked 2026-09-01

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