---
product_id: 22470563
title: "Sailor pen, fountain pen, professional gear, Silver, KOP Demonstrator Medium 10-9619-400"
brand: "セーラー万年筆"
price: "¥234503"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/22470563-sailor-pen-fountain-pen-professional-gear-silver-kop-demonstrator-medium
store_origin: JP
region: Japan
---

# Clear ink visibility Durable acrylic resin grip Medium 0.5mm precision nib Sailor pen, fountain pen, professional gear, Silver, KOP Demonstrator Medium 10-9619-400

**Brand:** セーラー万年筆
**Price:** ¥234503
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write your legacy with precision and style.

## Quick Answers

- **What is this?** Sailor pen, fountain pen, professional gear, Silver, KOP Demonstrator Medium 10-9619-400 by セーラー万年筆
- **How much does it cost?** ¥234503 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/22470563-sailor-pen-fountain-pen-professional-gear-silver-kop-demonstrator-medium)

## Best For

- セーラー万年筆 enthusiasts

## Why This Product

- Trusted セーラー万年筆 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ergonomic Resin Grip:** Comfort meets style with a sleek, durable acrylic grip designed for long sessions.
- • **Precision Medium Nib:** Experience flawless 0.5mm line control for professional writing.
- • **Compact & Lightweight:** At just 1.3 oz and 5.6 inches, it’s the perfect portable power pen.
- • **Timeless Silver Finish:** Elevate your desk aesthetic with a sophisticated silver sheen that commands respect.
- • **Transparent Ink Window:** Stay in the flow—monitor your ink levels with the clear demonstrator body.

## Overview

The Sailor KOP Demonstrator Medium fountain pen combines a precise 0.5mm medium nib with a durable acrylic resin grip and a transparent body for ink visibility. Lightweight and compact, this silver-finished professional pen is designed for millennial managers who value both performance and sleek aesthetics.

## Description

Sailor pen, fountain pen, professional gear, Silver, KOP Demonstrator Medium 10-9619-400

## Features

- KOPKing Of Pen
- 0.8 x 5.6 inches (20.0 x 142 mm) / 1.3 oz (37
- 21 PMMA/

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Sailor Pen |
| Brand | セーラー万年筆 |
| Item Weight | 8.2 ounces |
| Package Dimensions | 7.56 x 4.45 x 1.26 inches |
| Item model number | 10-9619-400 |
| Is Discontinued By Manufacturer | No |
| Color | 中字 |
| Closure | Snap |
| Grip Type | Resin |
| Material Type | アクリル |
| Number of Items | 10 |
| Size | 1 Count (Pack of 1) |
| Point Type | Medium |
| Line Size | 0.5mm |
| Ink Color | Clear |
| Manufacturer Part Number | 10-9619-400 |

## Product Details

- **Brand:** セーラー万年筆
- **Writing Instrument Form:** Fountain Pen
- **Color:** 中字
- **Ink Color:** Clear
- **Age Range (Description):** Adult

## Images

![Sailor pen, fountain pen, professional gear, Silver, KOP Demonstrator Medium 10-9619-400 - Image 1](https://m.media-amazon.com/images/I/61deGN8fp8L.jpg)
![Sailor pen, fountain pen, professional gear, Silver, KOP Demonstrator Medium 10-9619-400 - Image 2](https://m.media-amazon.com/images/I/81bhmCnc-kL.jpg)
![Sailor pen, fountain pen, professional gear, Silver, KOP Demonstrator Medium 10-9619-400 - Image 3](https://m.media-amazon.com/images/I/81MDvplW49L.jpg)
![Sailor pen, fountain pen, professional gear, Silver, KOP Demonstrator Medium 10-9619-400 - Image 4](https://m.media-amazon.com/images/I/71FPpskK3FL.jpg)
![Sailor pen, fountain pen, professional gear, Silver, KOP Demonstrator Medium 10-9619-400 - Image 5](https://m.media-amazon.com/images/I/71AGt6zkOgL.jpg)

## Available Options

This product comes in different **Color** options.

## Frequently Bought Together

- Sailor pen, fountain pen, professional gear, Silver, KOP Demonstrator Medium 10-9619-400
- Waterman Fountain Pen Ink, Intense Black, 50ml Bottle, For Refillable Fountain Pens
- Sailor Fountain Pen Professional Gear Imperial Black Fine Point 11-3028-220

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**Shop now:** [https://www.desertcart.jp/products/22470563-sailor-pen-fountain-pen-professional-gear-silver-kop-demonstrator-medium](https://www.desertcart.jp/products/22470563-sailor-pen-fountain-pen-professional-gear-silver-kop-demonstrator-medium)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-11*