Photo from a Rakuten Ichiba listing. View the listing Ad

uni-ball Signo RT1

0.28mm

UMN-155N-28.24

In production

List price$1.05Official site price (checked 2026-08-08), incl. tax

Used price—no data yet

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“uni-ball Signo RT1” 0.28mm (part no. UMN-155N-28.24) — Ballpoint from Mitsubishi Pencil (uni). Status: In production. List price $1.05 (Official site price checked 2026-08-08 , incl. tax). No used price yet — no purchase has been reported.

Prices are originally in Japanese yen. Amounts shown are converted at 1 USD = 157 JPY (2026-09-19) and are approximate. ・ List price ¥165

No one has entered a purchase price yet. Yours would be the first.

Where to buyAd

Rakuten Ichiba三菱鉛筆ゲルインクボールペンユニボールシグノ RT1 0.28mm 黒 UMN155N28.24 【ご注文単位 10本】Japan-only shop · forwarding needed¥102≈ $0.65

Yahoo! Shopping（注文条件:10本単位）ユニボールシグノ RT1 超極細0.28mm インク色:黒品番:UMN155N28.24 三菱鉛筆(uni) 専門ストアボールペンJapan-only shop · forwarding needed¥94≈ $0.60

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

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Find on eBayAd

eBaySigno RT1 Retractable Gel Ink Pen Ultra 0.28mm Black Rubber Uni-ballNew and used · condition varies by listing$14.00Listing price

These are eBay listings. They are separate from the figures above and are not used to calculate them.

Spec: 0.28mm
Released: 2013
JAN code: 4902778142554

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

Sources1

三菱鉛筆 Official Website Product InformationManufacturer official · checked 2026-08-08

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