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National Treasure

Writing Box with a Pontoon Bridge

舟橋蒔絵硯箱
Writing Box with a Pontoon Bridge (舟橋蒔絵硯箱)
PLATE IImage: Tokyo National Museum, via ColBase — CC BY 4.0
At a glance — Lacquerware · Edo period, 17th century · held by Tokyo National Museum · designated National Treasure of Japan · Hon'ami Koetsu.

Fact Sheet

Designation
National Treasure (国宝)
Category
Lacquerware
Date
1601–1700
Creator
Hon'ami Koetsu (本阿弥光悦)
Location
Ueno, Tokyo
Catalogue ID
cobas-81011

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This is a box used to store writing implements like inkstones, water droppers, ink brushes, and paper knives. It creates a striking impression with its high, domed lid and bold, close-up depictions of boats and a bridge. The surface of the lid uses a technique known as ikakeji, whereby a lacquered surface is covered by a dense sprinkling of gold powder and then polished. It also features waves rendered using the tsukegaki technique, whereby lines are drawn in sticky lacquer and then sprinkled with gold powder. The boats are crossed diagonally by a large bridge made from a strip of lead. The lid also features randomly-arranged Chinese characters created from thick cut-out strips of silver.

The characters quote a poem by the Heian-period noble Minamoto Hitoshi. The original poem featured the characters for 'pontoon bridge,' but these are omitted here and instead represented by the design itself. The artist Hon'ami Koetsu was active in Kyoto during the early 17th century. Though born into a family of sword polishers, he demonstrated his talents in the fields of calligraphy, pottery, and lacquerware. This mastery is on full display here in the bold shapes and designs, the superior technical skills, and the exquisite sense of balance engendered by the skillful application of gold, silver and lead.

— Museum description: Tokyo National Museum (CC BY 4.0), via ColBase / Japan Search.

Record & Sources

Cite this page: “Writing Box with a Pontoon Bridge(舟橋蒔絵硯箱).” Treasures of Japan, catalogue no. cobas-81011. Tokyo National Museum. https://treasures.yamato-kenkou.com/treasures/writing-box-with-a-pontoon-bridge/ — entry last verified 1 November 2026.
Full record data (as published in the official catalogue record)
  • Category: Applied arts:Objects for daily life:Objects for writing:Writing boxes
  • Cultural property designation: National Treasure
  • Genre: Lacquerware
  • Material: Lacquered wood with [maki-e]
  • 員数: 1合
  • 分類: 漆工
  • 種別: 工芸:生活用具:文房具:硯箱
  • 法量: 高11.8 縦24.4 横23

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